Modbus I/o - Last Mile Communication As

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8400100.qxp 3/20/2006 3:17 PM Page 56 900MB Modbus/RS-485 Series High-Density Discrete I/O Module Inputs (4) Twelve Discrete Inputs or Outputs or Outputs (4) Inputs (4) or Outputs (4) Isolation RS-485 Inputs (4) Modbus or BusWorks® Modbus I/O Outputs (4) 904/905/906MB Multi-Channel Discrete I/O Modules Active-High Inputs Sourcing Outputs (High-Side Switching) Models 904MB: 12 input channels 905MB: 12 output channels 906MB: 12 input/output channels Input Twelve input channels (904, 906 models only) 0 to 35V DC Output Twelve output channels (905, 906 models only) 5.5 to 35V DC Network Communication Modbus-RTU high-speed RS-485 Power Requirement 10 to 36V DC, 24V AC Approvals CE marked. UL, cUL listed Class I; Division 2; Groups A, B, C, D. 10-36V DC or 24V AC ■ Description These modules provide twelve discrete input and/or output channels. Isolation separates the I/O, power, and network circuits. Network communication adheres to the industry-standard RS-485 Modbus RTU protocol. Both AC and DC power sources are supported with wide range, nonpolarized, diode-coupled terminals. The outputs are intended for current-sourcing or high-side switching applications. The buffered inputs are active-high. These models are the complement of the 901, 902, and 903 units which have low-side output switches and active-low inputs. Socketed pull-down resistors are easily removed or exchanged to satisfy your application requirements. The 906MB model has twelve input/output points that may be used as inputs or outputs on a bit-by-bit basis. Outputs may be read back to verify output settings. Combining flexible I/O types, wide I/O ranges, and a network interface in a single package, makes this instrument extremely powerful. Multi-channel design adds cost-efficiency and allows high-density mounting. Plus, safe, rugged construction makes these modules reliable for use in both control room and distributed field I/O applications. Custom module configurations are also possible (consult factory for details). Power ■ Special Features ■ ■ ■ ■ ■ ■ ■ ■ Standard Modbus RTU protocol with high-speed RS-485 communication (up to 115K bps) Twelve I/O channels in a single inch-wide unit reduces system costs and saves panel space High-voltage, high-current, open-source outputs enable direct (high-side) control of external devices High-voltage buffered inputs monitor discrete levels from a variety of industrial devices Tandem input/output circuitry (906 models only) connects input buffers with open-source outputs for convenient loopback monitoring of the output state Watchdog timers provide a configurable failsafe output state for use when host I/O communication is lost Three-way isolation eliminates potential ground loops between power, I/O, and network circuitry Self-diagnostics monitor microcontroller activity to detect operational failures (lock-up) and execute a reset to restore communication Tel: 248-295-0880 Fax: 248-624-9234 e-mail: [email protected] www.acromag.com 56 8400100.qxp 3/20/2006 3:17 PM Page 57 Modbus ■ Performance Output Response Time ■ Discrete Inputs (904 & 906 models only) Input Type ■ I/O Outputs update within 50ms of a write command and switch within 5mS of receipt of command. Loopback response (906MB) is 1µS low-to high, 5µS high-to-low. 12 active-high, buffered inputs, with a common connection. Inputs include transient suppression devices and series connected 100K ohm resistors, plus diode over-voltage clamps to the internal +5V supply. General I/O Pull-downs and Socket 5.6K ohm pull-down resistor SIPs are installed in sockets at each port (four-channels per port). Excitation (per port) Input Signal Voltage Range External excitation voltage for each four-channel port is limited to 35V or less. 0 to 35V DC, maximum. Input Current Supported Modbus Commands 293µA, typical at 35V DC. Input Signal Threshold Input Resistance 5.6K ohms with standard factory pull-down resistors installed. 100K ohms without pull-downs. Input Hysteresis 100mV DC, typical. Input Response Time 500ns for low-to-high, 2µS for high-to-low, typical. Microcontroller samples inputs as a group every 10mS. LED Indicators ■ Discrete Outputs (905 & 906 models only) Output Type Power Requirements 12 independent, open-source, MOSFET switches that operate as high-side switches. Supply Current LEDs indicate power, status, and discrete level. 5.5 to 35V DC (0 to 250mA/channel continuous). External excitation voltage required. Supply 10V DC 24V DC 24V AC Output ON Resistance Isolation Current Draw 90mA maximum 40mA maximum 75mA rms maximum DIGITAL OUTPUT CONNECTIONS 5V TTL LOGIC INPUT IS ACTIVE HIGH AND PULLED DOWN INTERNALLY RELAY COIL/SOLENOID DRIVER (905MB/906MB) +5V CH 3 RTN RTN COM D 5-35V Typical I/O R CH LED TO OTHER 3 CHAN OF PORT OPEN RTN D B A INTERNAL PULLDOWN IS OPEN FOR 905MB NETWORK COMMUNICATION TB3 CH 3 CH 7 EXC3 + OFF (0) DIGITAL I/O 36 35 34 33 32 31 CH 2 CH 6 CH 8 COM PWR CH 0 CH 1 CH 5 CH 9 TB2 EXC1 CH 4 CH10 ON (1) TB3 RS485 TB1 EXC2 DIGITAL IN or OUT 21 22 23 24 25 26 DIGITAL I/O CH11 905MB TB4 TB1 INP 906MB shown. 904MB & 905MB are similar. COM 46 45 44 43 42 41 CH 2 DIGITAL IN or OUT CH 1 TB2 RTN COM CH 0 DIGITAL IN or OUT 11 12 13 14 15 16 DIGITAL I/O COM EXC1 EXC TB4 TB1 INP DIGITAL I/O SHARES COMMON 900C-SIP Configuration Software Interface Package (includes software CD-ROM for Windows, RS-232/485 converter, and RS-485/three-wire cable) 4001-095 USB-to-RS232 adapter. See page 70 for more info. TBK-B02 Optional terminal block kit, barrier strip style, 4 pcs. TBK-S02 Optional terminal block kit, spring clamp style, 4 pcs. PS5R-D24 Power supply (24V DC, 2.1A). See Power Supplies on Page 199. For more information on software, network hardware, and mounting accessories, please see Pages 69-71. Optional terminal blocks: barrier strip (left) and spring clamp (right). Cage clamp terminal is standard. DIGITAL INPUT CONNECTIONS (ACTIVE HIGH) INP Accessories 1500V AC for 60 seconds or 250V AC continuous. 3-way isolation between I/O, network, and power circuits. 0.15 ohms maximum. SPST RELAY 904MB-0900 Discrete input module 905MB-0900 Discrete output module 906MB-0900 Discrete input/output module 10 to 36V DC, 22 to 26V AC. Output Voltage Range UP TO 35V DC + Models INTERNAL INPUT PULL-DOWNS ARE PRESENT AC/DC POWER 10 TO 36V DC OR 24V AC NON-POLARIZED TB1 EXC1 OUT CH 0 DIGITAL I/O SHARES RETURN RTN RTN Locate Snubber at Coil CH 1 CH 2 CH 3 RTN Tel: 248-295-0880 Fax: 248-624-9234 e-mail: [email protected] www.acromag.com 57 BusWorks® Modbus I/O TTL compatible with 100mV of hysteresis, typical. Thus, Low-to-High threshold is 1.5VDC, High-to-Low is 1.4VDC, typical. Limited to TTL levels of 0.8VDC (max. LOW level) and 2.0VDC (min. HIGH level). The command/response protocol for communicating with this module adheres to the Modbus/RTU standard for the following Modbus Functions. Read Coil (Output) Status Read Input Status Read Holding Registers Read Input Registers Force Single Coil (Output) Preset Single Register Reset Slave Force Multiple Coils (Outputs) Preset Multiple Registers Report Slave ID ■ Ordering Information 8400100.qxp 3/20/2006 3:18 PM Page 68 900MB Series 900MB Series Technical Diagrams TB4 TB3 Acromag DFT B A D D TB3 TB1 2.34 (59.4) BusWorks® Modbus I/O PWR TB2 2 3 CL RS485 3.75 (95.3) 0 1 36 35 34 33 32 31 TB4 ST COM COM 46 45 44 43 42 41 RUN 4.68 (118.9) "T" Rail Din Mounting Din EN 50022, 35mm 11 12 13 14 15 16 21 22 23 24 25 26 TB2 TB1 3.90 (99.1) 1.05 (26.7) NOTE: ALL DIMENSION ARE IN INCHES (MILLIMETERS) 4.35 (110.5) PERSONAL COMPUTER W/ WINDOWS 95/98 OR NT RS-232 SERIAL PORT CONNECTOR AT BACK OF PC PC RUNNING ACROMAG MODBUS CONFIG SOFTWARE INSTALL MODBUS CONFIGURATION SOFTWARE RS-232 TO RS-485 CONVERTER MODEL 5034-214 CONNECT THE RS-232 SIDE OF CONVERTER TO THE PC CAUTION: DO NOT CONNECT THE CABLE DIRECTLY TO THE PC WITHOUT THE CONVERTER, OR DAMAGE TO THE MODULE MAY RESULT. CABLE 5034-202 CONNECT THE RS-485 SIDE OF CONVERTER TO THE CABLE 900C-SIP COMMUNICATION CONNECTIONS CB A CONNECT WIRES AS SHOWN COM D TB4 TB4 Acromag RUN RED RS-485 D B BLACK D C GREEN COM REFER TO THE USER'S MANUAL THAT CAME WITH YOUR MODULE TO COMPLETE THE MODULE'S POWER AND I/O CONNECTIONS TB2 TB1 COLOR A PWR ANY 900MB MODULE TB1 R A STATUS LED FLASHES IN DEFAULT MODE. B RS485 D DEFAULT MODE SWITCH PUSH FOR DEFAULT MODE. D TB3 3 WIRE 36 35 34 33 32 31 COM 2 46 45 44 43 42 41 TB3 COM 1 RUN/PWR LED (GREEN) STATUS LED (YELLOW) TB4 ST DFT 0 D 11 12 13 14 15 16 21 22 23 24 25 26 TB1 TB2 Tel: 248-295-0880 Fax: 248-624-9234 e-mail: [email protected] www.acromag.com 68 3/20/2006 3:18 PM Page 69 Modbus Configuration Kit Software Interface Package Model No. 900C-SIP RS-485 Cable (DB-9) RS-232 to RS-485 Converter (non-isolated) Configuration Software for Windows Software Interface Package ■ Ordering Information 900C-SIP Software Interface Package. Includes Configuration Software (5034-186), Non-isolated RS-232 to RS-485 Serial Port Converter (5034-214), and RS-485 Cable (5034-202). Items can also be ordered separately below. 5034-186 Configuration Software for Windows (95/98/2000/ME/ NT4/XP) on CD-ROM. 5034-214 Non-isolated RS-232 to RS-485 Serial Port Converter, DB-9F to DB-9F. 5034-202 RS-485 to 3-wire Cable Converter, DB-9M to 3 x 12AWG RS-485 Cable, 8 ft. This package includes Windows® Configuration Software, an RS-232-to-485 Serial Port Converter, and an RS-485 Signal Cable. These components provide everything you need to set up a Series 900 I/O module from your desktop PC before installing it on the network. RS-232/485 Converter (non-isolated) RS-485 to 3-wire 5034-214 5034-202 Universal 50W Power Supply PS5R-D24 Universal Power Supply Top View (dimensions in mm) Side View (dimensions in mm) 5 6. -ø 10 3.8 90 80 ø4 4- 13 .5 The PS5R-D24 is the ideal power source to drive your network. ■ Ordering Information 13 13 13 DC ON 35.3 Universal power 85 to 264V AC, 105 to 370V DC 60 75 Input Power Requirement V.ADJ Output 5 24V DC, 2.1A (50W) M3.5 Terminal Screws 6 95 12 Mounting Hardware DIN-Rail Mounting For your convenience, Acromag offers several mounting accessories to simplify your system installation. Our 19” rack-mount kit provides a clean solution for mounting your I/O modules and a power supply. Or you can buy precut DIN rail strips for mounting on any flat surface. ■ Ordering Information 20RM-16-DIN 19" rack-mount kit with DIN rail. DIN RAIL 3.0 DIN RAIL 16.7 DIN rail strip, Type T, 3 inches (75mm) or 16.7 inches (425mm) Dimensions in inches (mm). Tel: 248-295-0880 Fax: 248-624-9234 e-mail: [email protected] www.acromag.com 69 BusWorks® Modbus I/O Network Power I/O 7.35 8400100.qxp Accessories Model 4001-095 USB-to-Serial Adapter HOST USB PERSONAL COMPUTER RUNNING WINDOWS 98/ME/2000/XP TO HOST USB PORT 4001095 USB SERIAL CONVERTER USB MALE HOST PC RUNNING ACROMAG CONFIGURATION SOFTWARE LED RS232 DB9P 6 FEET OF CABLE Simplifies configuration of Acromag I/O Modules ◆ Enables configuration via USB port Description Performance Specifications Ordering Information This device is a USB-to-serial adapter that you can use to communicate with many Acromag I/O products for setup and re-configuration for your application. USB Specification Version 1.1 Data rate Up to 115.2Kbps Environmental Standards RoHS-compliant Basic Power Consumption 150mA PC Requirements Windows® 7 (32-/64-bit) / Vista (32-/64-bit) / XP (32-/64-bit) / Server 2003 & 2008 (32-/64-bit) / 2000 / ME / 98SE / 98 NOTE: For more information visit www.acromag.com. Key Features & Benefits Connects to I/O modules via USB (other adapters may be necessary) ■ Complete RS232 control signals ■ Conforms to USB Specification, Version 1.1 ■ Adapters 4001-095 USB to serial adapter. Includes driver CD and manual. 5030-913 Serial port adapter. DB9S connector to RJ11 jack. 5034-202 RS-485 to 3-wire cable converter and cable, DB-9M to 3 x 12AWG RS-485 cable, 8 ft. 5032-287 RS-232 to 151T transmitter configuration device converter and cable, 6 ft. 5034-214 Non-isolated RS-232 to RS-485 Serial Port Converter, DB-9F to DB-9F. USB-powered ■ Cable length, 6 ft., UL approved ■ Cables RJ11 JACK (6 CONDUCTOR) 5030-902 Cable. 6 feet long with RJ11 plug at each end. RJ11 PLUG (6 CONDUCTOR) MODEL 5030-902 (6 feet long) MODEL 5030-913 4 4 3 mV+ 3 & 4 Wire RTD 2 1 -T/C, TOP VIEW RS-485 RS-232 5034-202 C DB9 FEMALE – MODEL 5032-787 CABLE 5034-202 6 FEET OF CABLE 151T TRANSMITTER + 1046-016 Acromag 1046-016 Acromag RS232 TO RS485 SERIAL CONVERTER (MODEL 5034-214) TO RS232 TOP VIEW 900MB Modbus Series Adapter and Cable PLUG INTO TOP OF TRANSMITTER 151C-SIP INTERFACE ADAPTER Transmitter temperature of 151T plug into top 151T Transmitter Series Adapter and Cable 2 3 9-PIN CONNECTOR (DB9S) INTELLIPACK SERIAL ADAPTER 1 IntelliPack 800x Series Adapter and Cable DB9 FEMALE B A DB9 MALE COM D D Tel: 248-295-0880 Bulletin #8400-572 ■ Fax: 248-624-9234 ■ [email protected] ■ www.acromag.com ■ 30765 S Wixom Rd, Wixom, MI 48393 USA All trademarks are property of their respective owners. Copyright © Acromag, Inc. 2009. Data subject to change without notice. Printed in USA 10/2009.