Setup and Connections
ESERV-M12T Modbus Gateway
8
ESERV-M12T
(Rev. 1210)
MODBUS GATEWAY SETUP AND CONNECTIONS
This section describes how to setup and connect ESERV-M12T Modbus Gateways.
Note: In this section devices to be connected to the Modbus gateway
’s serial connection are simply
referred to as the “Modbus network”.
CONNECTING THE POWER SUPPLY
Connect a DC power supply to the power terminals on the top of the Modbus gateway. Polarity of the wires is
indicated on the label on the side of the Modbus gateway. Acceptable voltages are between 10 VDC and 58 VDC.
The power supply must be capable of supplying 4 Watts for ESERV-M12T units.
Figure 10.
ESERV-M12T Power Connection
CONNECTING ESERV-M12T MODBUS GATEWAYS TO MODBUS NETWORKS
ESERV-M12T Modbus Gateway scan be configured to connect to Modbus networks using RS-232, RS-422, RS-485
2-wire and RS-485 4-wire.
RS-232
connections support eight signal lines plus Signal Ground. Signals are single ended and referenced to
Ground. Default communications parameters are 9600, 8, N, 1 and no flow control implemented.
RS-422
connections support two signal pairs: RXA(-), RXB(+) and TXA(-), TXA(+), plus GND. The data lines are
differential pairs (A & B) in which the B line is positive relative to the A line in the idle (mark) state. Ground
provides a common mode reference.
RS-485
connections support 2-wire or 4-wire operation.
Summary of Contents for ESERV-M12T
Page 1: ...ESERV M12T Modbus Gateway User Manual...
Page 12: ...Hardware ESERV M12T Modbus Gateway 7 ESERV M12T Rev 1210 Figure 9 ESERV M12T DIN Clips...
Page 40: ...Modbus Help ESERV M12T Modbus Gateway 35 ESERV M12T Rev 1210 Figure 24 Modbus Priority...
Page 46: ...Modbus Help ESERV M12T Modbus Gateway 41 ESERV M12T Rev 1210 Figure 31 Port 1 Modbus...
Page 48: ...Modbus Help ESERV M12T Modbus Gateway 43 ESERV M12T Rev 1210 Figure 33 Modbus Slave ID Routing...
