Appendix EE5ZE Temperature Controller Read Protocol
189
RS422/485 Connections
RS-485

Pin No. Signal name Abbreviation Signal direction

1Disabled (Do not connect.) – –

2Disabled (Do not connect.) – –

3Signal ground SG

4Terminal B (+ side) B I/O

5Terminal A ( side) A I/O

Turn off the communications switch
to disconnect terminating resistance.
Terminating
resistance
240
SN751177N or
equivalent
Terminating
resistance
Shielded cable
Shielded cable
Terminating
resistance
Serial Communications
Board E5ZE
E5ZE
Signal
name Pin No. Ter-
minal
Signal
name
Signal
name
RS-485: D-sub
9-pin female RS-485: Terminals
RS-485: Terminals
Ter-
minal
Note Terminal block pins 1 and 2 cannot be connected. If these blocks are used, operation of the E5ZE may fail.