Transcript
Doc. No.
Ver: 1.05
FS-8700-66
Rev: 1
GE-SNP Protocol Serial Driver
1
DESCRIPTION
The GE-SNP Serial driver allows the FieldServer to transfer data to and from devices over either RS-232 or RS-485 using GESNP Serial protocol. The FieldServer can emulate either a Server or Client. The FieldServer provides functions to read and write PLC memory and change the privilege level. Standard SNP mailbox messages are used. The driver does not support Datagram messages and cannot parse them. These messages are defined by the SNP protocol to allow multiple data types to be packed into one message. They are not commonly used by the HMI and rd 3 party applications and are inconsistent with the FieldServer’s Write Through and Port Expander capabilities. The driver can expose communications statistics in a Data Array so that downstream devices can monitor them. Fieldserver Mode Client Server
2
Nodes 1
Comments Only 1 Client node allowed on Multidrop systems
FORMAL DRIVER TYPE
Serial Client or Server
3
COMPATIBILITY MATRIX
FieldServer Model FS-x2010 FS-x2011 FSx25 FS-x30 FS-x40 SlotServer ProtoCessor ProtoNode QuickServer
4
Compatible with this driver Yes Yes Yes Yes Yes Yes Yes Yes Yes
CONNECTION INFORMATION Connection type: Baud Rates: Data Bits: Stop Bits: Parity: Multidrop Capability
RS-232 or RS-485 (Two wire, Half-Duplex) 110 – 19200, standard baud rates only (Vendor limitation), 19200 7,8 1,2 Odd, Even, None Yes
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.FieldServer.com Tel: (408) 262-2299 Fax: (408) 262-2269 Toll Free: (888) 509-1970 email:
[email protected] Page 1 of 5
Doc. No.
Ver: 1.05
FS-8700-66
Rev: 1
GE-SNP Protocol Serial Driver
5
DEVICES TESTED
Device
Tested (FACTORY, SITE)
Series 90-30 CPU 364
Factory & Site
Intellution FIX32’s SNP device driver.
Site
6
CONNECTION CONFIGURATIONS
The FieldServer is connected to the GE PLC in one of two ways. Almost every GE PLC has a RS-232 and RS-485 port. Possible cable configurations are illustrated below. A converter is required to connect between RS-232 and RS-485. An example of connection configurations for the Model480TLED connector is depicted overleaf. Any equivalent connector can be used. Cable 1 GE
FieldServer Tx Rx
10
-
11
-
+
12
+
-
13
-
Gnd
RS-485 port
+
+
7
Tx Rx Gnd
Cable 1
RS-485 port 15 pin female
FieldServer
GE-PLC Ca C
RS-232 port
le ab
3
ble
4
RS-232 port RJ11
Cable 2 Cable 2 FieldServer
GE
Tx Rx
5
Gnd
3 4
Gnd
1 6
CTS RTS
2
*
Rx Tx
Pin 1 at bottom
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.FieldServer.com Tel: (408) 262-2299 Fax: (408) 262-2269 Toll Free: (888) 509-1970 email:
[email protected] Page 2 of 5
Doc. No.
Ver: 1.05
FS-8700-66
Rev: 1
GE-SNP Protocol Serial Driver
RS- 232 TO RS- 422/ 485 OPTICALLY ISOLATED CONVERTER
3 4
5 7
7
Recceive
Transmit
B& B electronics
1
2
3
4
5
6
7
SD RTS
3
O N
SR-422/485
2
RS-232
FS-8917-01
2
8
TB1 TDA(-) TDB(+) RDA(-) RDB(+) 422/ 485 GND
MODEL485 OTLED
TB2
+12V R-232 GND
J2 DB25F 21787
TDA(-) TDB (+) RDB(+) RDA(-) GND
JP1
4800 9600 19.2K 38.4K ECHO 4W/2W 4W/2W TERM.
Remote Serial Device– 4 wire
Remote Serial Device– 2 wire
91035
+ (B) - (A) GND
From FieldServer
RS-232 Device
3
Tx
RTS
5
RTS
3 4
GND GND
7
Recceive
Transmit
O N
B&B electronics MODEL 485OTLED
7
J2
2
3
4
5
6
7
8
TB1 TDA(-) TDB(+) RDA(-) RDB(+) 422/485 GND TB2 +12V R-232 GND
DB25F Note: Pins 4&5 and pins 6,8&20 are bridged internally to allow for RS-232 devices that need hardware control.
1
SD RTS
Tx
RS-232
2
RS-232 TO RS-422/485 OPTICALLY ISOLATED CONVERTER
2
SR-422/485
Rx
Rx
JP1
4800 9600 19.2K 38.4K ECHO 4W/2W 4W/2W TERM.
Converter for Cable 3: From RS-232 on FieldServer to RS-485 on device.
FieldServer
91035 R1 or R2 + (B) - (A) GND
Converter for Cable 4: From RS-485 on FieldServer to RS-323 on device.
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.FieldServer.com Tel: (408) 262-2299 Fax: (408) 262-2269 Toll Free: (888) 509-1970 email:
[email protected] Page 3 of 5
Doc. No.
Ver: 1.05
FS-8700-66
Rev: 1
GE-SNP Protocol Serial Driver
RJ45
Ethernet cable segment black yellow blue white green 6 7 2 3 5
Horner 232 to 422
9 pin 9 pin
black yellow blue white green
5 3 2 7 6
RJ45
9 pin
5 3 2
9 pin
15 pin
CPU or 2ndary port 25 pin
PLC null modem Pri or 2ndary port
Horner 232 to 422
9 pin 9 pin
Com1
9 pin
black yellow blue white green
3 2 5
GE LOGICMASTER PC Software to PLC
15 pin
PC
RJ45
Typical FieldServer Cable RJ45
P1-P8
6.1
Connection Notes
The SNP driver is capable of acting as a client or server.
The SNP driver can read and write system memory and change privilege levels of a SNP device.
The SNP driver supports the Mailbox communication method of the SNP protocol. The Datagram method is unsupported.
The SNP driver can expose its communication statistics so that they can be monitored by a downstream device.
Up to 4096 bytes of data can be handled in a single transaction. FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.FieldServer.com Tel: (408) 262-2299 Fax: (408) 262-2269 Toll Free: (888) 509-1970 email:
[email protected] Page 4 of 5
Doc. No.
Ver: 1.05
FS-8700-66
Rev: 1
GE-SNP Protocol Serial Driver
7 7.1
COMMUNICATIONS FUNCTIONS - SUPPORTED FUNCTIONS AT A GLANCE: Data Types Supported
FieldServer Data Type
Description (or Device Data Type)
Analog Input Digital Input Analog Register Digital Register Analog Output Digital Output
7.2
Read Operations supported
FieldServer as a Client
FieldServer as a Server
Discrete Inputs (%I) Discrete Outputs (%Q)
Discrete Inputs (%I) Discrete Outputs (%Q)
Discrete Temporaries (%T) Discrete Internals (%M)
Discrete Temporaries (%T) Discrete Internals (%M)
Genius Global Data (%G) Analog Inputs (%AI)
Genius Global Data (%G) Analog Inputs (%AI)
Analog Outputs (%AQ) Registers (%R) %SA Discrete %SB Discrete %SC Discrete %S Discrete (%S)
Analog Outputs (%AQ) Registers (%R) %SA Discrete %SB Discrete %SC Discrete %S Discrete (%S)
7.3
Unsupported Functions and Data Types
Function
Reason
Programming messages
FieldServer is a data transfer device, and as such, programming messages are not required
Datagram messages
These messages are defined by the SNP protocol to allow multiple data types to be packed into one rd message. They are not commonly used by the HMI and 3 party applications and are inconsistent with the FieldServer’s Write Through and Port Expander capabilities
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.FieldServer.com Tel: (408) 262-2299 Fax: (408) 262-2269 Toll Free: (888) 509-1970 email:
[email protected] Page 5 of 5
