B&B Electronics MESR900 Series - Fiber Models - Manual - Manual (Page 13)

2. Hardware VlinxMESR9xx Modbus Gateway
Page 9 Manual Documentation Number MESR9xx-2113m
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Fiber Optic Connectors
Modbus gateway models using fiber optic network connections use either SC or ST
connectors, depending on the specific model.
Figure 7. SC and ST Fiber Optic Cable Connectors
Serial Port Connectors
MESR9xx Modbus Gateways use four serial port connector configurations, depending on
the model:

MESR901-x Modbus Gateways feature one serial port and use a DB-9M
connector for RS-232 and a five-position removeable terminal block for RS-422
and RS-485 connections.

MESR902T-x Modbus Gateways feature two serial ports, both using five-position
removable terminal blocks for RS-232, RS-422 and RS-485 connections.

MESR921-x Modbus Gateways feature one serial port and use a DB-9M
connector for RS-232 and a five-position removeable terminal block for RS-422
and RS-485 connections.

MESR922T-x Modbus Gateways feature two serial ports, both using five-position
removable terminal blocks for RS-232, RS-422 and RS-485 connections.
Figure 8. DB-9 Female Serial Port Connector
Figure 9. Five-Position Pluggable Terminal Block
Note: Refer to Appendix D for connection pin-outs.