FST DFS GE-SNP

FST DFS GE-SNP
Protocol Driver
FieldServer Driver - Serial
FS-8700-66
GE-SNP Protocol Serial Driver
Driver Code:
Version:
Protocol Version:
Document Rev:
Devices Supported:
SNP
1.00a
N/A
1
GE 90-70, 90-30 PLC’s and other SNP compliant devices
Device
Tested
Protocol has been tested against a Series 90-30 CPU
364
Protocol has been tested against an Intellution FIX32’s
SNP device driver.
Interface:
Baud Rates:
Data Bits:
Stop Bits:
Parity:
Handshaking:
RS232 or RS-485 (Half-Duplex)
Std Baud Rates up to 19200 (GE PLC limitation)
7,8
1,2
Odd, Even, None
None
•
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 FieldServer’s serial and/or RS485 ports may be used to communicate with the 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.
•
The following data types may be read.
Discrete Inputs (%I)
Discrete Outputs (%Q)
Discrete Temporaries
(%T)
Discrete Internals (%M)
%S Discrete (%S)
•
Genius Global Data
(%G)
Analog Inputs (%AI)
Analog Outputs (%AQ)
Registers (%R)
%SA Discrete
%SB Discrete
%SC Discrete
Up to 4096 bytes of data can be handled in a single transaction.
FieldServer Technologies, 1991 Tarob Court, Milpitas, CA 95035 USA
Tel: 408-262-2299, Fax: 408-262-9042 Toll-Free: 888-509-1970
Email: [email protected]
Website: www.fieldserver.com
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