Four Screw Terminals (Eip-2202); Serial Terminal (4) Connectors - Comtrol DeviceMaster EIP Series Hardware Installation And Configuration Manual

Connecting Serial Devices

Four Screw Terminals (EIP-2202)

This subsection discusses the following topics for the EIP-2202 with 4 serial screw terminals. See
Terminals (EIP-2402) on Page 45 if the DeviceMaster has eight serial terminals.
•

Serial Terminal (4) Connectors

• Serial Terminal (4) Null-Modem Cables (RS-232)
• Serial Terminal (4) Null-Modem Cables (RS-422)
• Serial Terminal (4) Straight-Through Cables (RS-232/485)
• Serial Terminal (4) Loopback Signals
• Connecting Serial Devices
Serial Terminal (4) Connectors
Use the following table or drawings for signal information. The signals for SERIAL2 are the same as
SERIAL1.
RS-232
TxD RTS
† Ground must be connected to the appropriate signal ground terminal.
Signal
Ground
RS-422/RS-485
Full-Duplex
Half-Duplex
† RS-232 ground must be connected to the signal ground terminal.
42 - Connecting Serial Devices
on Page 42
on Page 44
on Page 44
RS-485 Full-Duplex
RxD CTS TxD-
RS-232: Connecting the Ground
Not connected
† Wire gauge: AWG 12-22
RS-232† TxD
TxD-
RS-485
TRxD-
DeviceMaster EIP | UP Hardware Installation and Configuration Guide: 2000633 Rev. C
on Page 43
on Page 43
on Page 44
RS-422
TRxD-
RxD-
RxD+
TxD+
Signal
Chassis
Ground†
Ground†
Return†
RTS
TxD+
TRxD+
RS-485 Half-Duplex
TRxD+
6-30VDC
Positive†
RxD CTS
RxD- RxD+
Eight Screw