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Appendix EE5ZE Temperature Controller Read Protocol
190
• RS-422A
Pin No. Signal name Abbreviation Signal direction
1 Receive data B RDB Input
2 Receive data A RDA Input
3 Signal ground SG –
4 Send data B SDB Output
5 Send data A SDA Output
Terminating
resistance
Shielded cable
Shielded cable
Terminating
resistance
Serial Communications
Board
E5ZE
Signal
name
Pin No.
Signal
name
Terminating
resistance
Signal
name
Terminating
resistance
SN751177N or
equivalent
Terminating
resistance
Terminating
resistance
Turn off the communications switch
to disconnect terminating resistance.
Te r-
minal
RS-422A: D-sub
9-pin female
RS-422A:
Terminals
Terminal
block
Te r-
minal
240Ω