Omron CQM1H-SCB41 Operation Manual page 248

E5@J Temperature Controller Protocol
• RS-422A
Serial Communications
Board
RS-422A: D-sub
9-pin female
Signal
name
Terminating
resistance
(terminator)
• RS-485
Serial Communications
Board
RS-485: D-sub
9-pin female
Terminat
ing resis
tance
Signal name
Send data A
Send data B
Receive data A
Receive data B
Signal ground
E5AJ
RS-422A:
Terminal Block
Pin
No.
Termi-
Signal
nal
name
Shielded cable
Shielded cable
Signal name
Terminal A
Terminal B
Signal ground
E5AJ
RS-485:
Signal Pin Terminal Block
No.
name
Termi- Signal
nal name
Shielded cable
Shielded cable
Abbreviation
SDA
SDB
RDA
RDB
SG
Terminating
resistance
Terminating re-
sistance
240
E5AJ
RS-422A:
Terminal Block
Termi- Signal
name
nal
Abbreviation
A
B
SG
Terminating
resistance
Terminator switch
E5AJ
RS-485:
Terminal Block
Signal
Termi-
name
nal
Appendix G
Signal direction
Output 26
Output 25
Input 28
Input 29
– 27
SN751177N or
equivalent
Terminating resis
tance (240 ) is
connected via the
terminator switch.
Terminator switch
Signal direction
I/O 26, 28
I/O 25, 29
– 27
SN751177N
or equivalent
Terminating resis
tance (240 ) is
connected via the
terminator switch.
Pin No.
Pin No.
233