3. Setup and Connections
VlinxMESR9xx Modbus Gateway
Page 13
Manual Documentation Number MESR9xx-1016m
Connecting the MESR9x2T-x
The
MESR9x2T-x
has two serial connections that support RS-232, RS-422 and RS-485
(2- and 4-wire). The unit has two connectors, both of which are 5-position terminal
blocks. Make the appropriate connections to the terminal blocks to match the serial
connection mode you select when configuring the Modbus gateway.
Note: Refer to Appendix D for connector pinout information.
Figure 14. MESR902T-x Connections
Connecting the MESR9x2D-x
The
MESR9x2D-x
has two serial connections that support RS-232, RS-422 and RS-485
(2- and 4-wire). The unit has two connectors, both of which are DB-9M connectors. You
must connect the Modbus network to the Modbus gateway via a serial cable. The
MESR902D is a DTE. If the Modbus network is a DTE, use a null modem (cross-over)
cable. If the Modbus network is a DCE, use a straight-through cable.
Note: Refer to Appendix D for connector pin-out information.
Figure 15. MESR902D-x Connections