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E5#J Temperature Controller Protocol
RS-422A/485 Connections
Serial Communications Board
(CS Series only)
Serial Communications Unit
(CS/CJ Series)
RS-422A/485 port
‡ RS-422A 4-wire connections
Serial Commu-
nications Board/Unit
RS-422A: D-sub
9-pin female
Signal
Pin
name
No.
Shell
Shield
*1: Set the 2-/4-wire switch
to the 4-wire setting.
*2: Turn ON the terminat-
ing resistance switch.
PC PS
Signal name
Send data A
Send data B
Receive data A
Receive data B
Signal ground
E5AJ
Terminating
RS-422A:
resistance
Terminal Block
Ter-
Signal
name
minal
Terminating re-
sistance
240 Ω
E5AJ
RS-422A:
Terminal Block
Shield
Ter-
Signal
minal
name
E5#J
→
RS-422A/485
E5#J
→
RS-422A/485
Up to 32 units can be
connected.
E5#J
→
RS-422A/485
Abbreviation
Signal direction
SDA
Output
SDB
Output
RDA
Input
RDB
Input
SG
---
SN751177N or
equivalent
Terminator switch
Appendix G
Pin No.
26
25
28
29
27
Terminating resist-
ance (240 Ω) is
connected via the
terminator switch.
301
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