COMMUNICATIONS PORT / REMOTE RESET
The Model 777-FT comes standard with a 9-pin sub-D connector for remote
communications. The Model 777-FT supports the RS-485 communication
standard using the MODBUS protocol. This standard allows up to 99 Model
777-FTs to be controlled and monitored from a single remote personal computer.
Control and monitoring is also possible from SymCom’s RM-1000 and RM-2000.
PLC and SCADA systems using the RS-485 standard and MODBUS protocol
can also be used.
NOTE: An RS-485MS-2W module is required to operate the communications
bus. (Refer to RS-485MS-2W Installation Instructions for more
information on this subject). The communications port also
provides connections for remote reset as shown in Figure No. 6.
5
4
3
2
9
8
7
6
1
Normally Open Push Button
FIGURE NO. 6: REMOTE RESET CONNECTIONS
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07/25/03
