Precision Digital Pd765 Trident Indicator Serial Communications Operation Manual

Transcript

T R I D E N T S E R I A L C O M M U N I C AT I O N ADAPTERS RS-232 and RS-422/485 Adapters To communicate with a computer or other data terminal equipment an RS-232 or RS-422/485 adapter option is required; see Ordering Information for details. SPECIFICATIONS (Not Provided) 7' (2.1 m) Standard Modular Cable provided with adapter CABLE P R E C IS IO N General D IG IT A L RS-232 Adapter Serial Cable COMMUNICATION PDC proprietary, application developers should contact the factory for information PROTOCOL STATUS INDICATION Separate LEDs for power (P), transmit (TX), and receive (RX) SOFTWARE Supported by PDC MeterView software for data acquisition and meter configuration PDA7420 Modular Cable (Provided) RS-232 Adapter Figure 1. RS-232 Adapter Connections COMPATIBILITY Compatible with EIA-232 CONNECTORS PC compatible 9-pin D subminiature connector and RJ11 (adapter to meter) DISTANCE Adapter to meter: 7' (2.1 m) max. Adapter to computer: 50' (15 m) max. (Serial interface cable not provided) RS-422/RS-485 Adapter COMPATIBILITY Compatible with EIA-422 and EIA-485 CONNECTORS Removable 5-pin screw terminal connector and RJ11 (adapter to meter) DISTANCE Adapter to meter: 7' (2.1 m) max. Adapter to computer: 3,937' (1,200 m) max. ORDERING INFORMATION Model Description PDA7232 RS-232 Serial Adapter with PDA7420 Modular Cable Included PDA7422 RS-422/485 Serial Adapter with PDA7420 Modular Cable Included PDA7502 MeterView Version 2.0 Software (WH) 1 1 (BK) 2 2 (R) 3 3 (G) 4 4 (Y) 5 5 (BL) 6 6 Figure 2. Standard Modular Cable Wiring When using more than one meter in a multidrop or multipoint mode, each meter must be provided with its own unique address. The address may be programmed from 00 to 99. Serial Communication Address (serl) Address for Trident Meter is set to 00 at the factory To change meter address: 1. Press and hold Right arrow and Menu buttons for three seconds to access Advanced Features menu of the meter. 2. Press Up arrow until Serial (SErL) menu is displayed and press Enter/Ack, Addr is displayed. 3. Press Enter/Ack to change meter address using Right and Up arrow buttons. Press Enter/Ack to accept. 4. Press Menu button to exit and return to Run Mode. PRECISION DIGITAL CORPORATION 19 Strathmore Road • Natick MA 01760 USA Tel (800) 610-5239 • Fax (508) 655-8990 www.predig.com Trident Serial Communication Adapters Instruction Manual RS-422/485 Adapter #1 P R E C IS IO N D IG IT A L RS-232 Serial Connections to PC RS-422/232 CONVERTER Modular Cable to Meter #1 (Not Provided) TD(A) TD(B) RD(A) RD(B) COM R Shield Last Adapter RS-422/485 Adapter #1 Twisted-Pair DI DI DO RS-422/485 Adapter #n DO DI DI DO DO R R = 120 Ohm termination resistor, typical Figure 3. Multipoint, RS-422 Wiring Notes: 1. Termination resistors are optional and values depend on the cable length and characteristic impedance. Consult the cable manufacturer for recommendations. 2. Recommended RS-422/485 to RS-232 Converter: B&B Electronics Model 485TBLED (www.bb-elec.com). 2 Trident Serial Communication Adapters Instruction Manual RS-422/485 Adapter #1 P R E C IS IO N D IG IT A L RS-232 Serial Connections to PC RS-485/232 CONVERTER Modular Cable to Meter #1 (Not Provided) TD(A) TD(B) RD(A) RD(B) COM R Shield Last Adapter RS-422/485 Adapter #1 Twisted-Pair DI DI DO DO RS-422/485 Adapter #n DI DI DO DO R R = 120 Ohm termination resistor, typical Figure 4. Multidrop, RS-485 Wiring Notes: 1. Termination resistors are optional and values depend on the cable length and characteristic impedance. Consult the cable manufacturer for recommendations. 2. Recommended RS-422/485 to RS-232 Converter: B&B Electronics Model 485TBLED (www.bb-elec.com). 3 LIM7232_C.doc 02/02