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G7TC-OC16 Alarm Output and Cooling Side Control Output (For Heating and Cooling Control
Models Only)
G7TC-OC16
I/O Block
Communication Interfaces
RS-232C
Pin Assignments
RS-422 and RS-485
Communications
terminal block
Drive power
supply for G7TC
(12 or 24 VDC)
Enlarged
illustration
Communications
terminal block
Not used
Cooling side control output (Do not use these
terminals when using an E5ZE Standard Model.
Alarm output
Signal name
Signal ground
Send data
Receive data
Send request
Send enable
Data set ready
Data terminal ready
Not used
Electrical characteristics: Conforming to EIA RS-232C
Synchronization clock:
RS-422
Terminal
Signal name
1
Receive data B RDB
2
Receive data A RDA
3
Signal ground
4
Send data B
5
Send data A
Electrical characteristics:
Synchronization clock:
Maximum E5ZE Units connectable: 16 (excluding host system)
Transmission length:
RS-485
Terminal
Signal name
1
Not used
2
Not used
3
Signal ground
4
Terminal B (+)
5
Terminal A (–)
Electrical characteristics:
Synchronization clock:
Maximum E5ZE Units connectable: 16 (excluding host system)
Transmission length:
Multipoint Temperature Controller
Point
number
Symbol
Signal
direction
SG
---
7
SD
Output
2
RD
Input
3
RS
Output
4
CS
Input
5
DR
Input
6
ER
Output
20
NC
---
1, 8 to 19, 21 to
25
Internal
Symbol
Signal direction
Input
Input
SG
---
SDB
Output
SDA
Output
Conforming to EIA RS-422
Internal
500 m max. in total
Symbol Signal direction
---
---
---
---
SG
---
B
I/O
A
I/O
Conforming to EIA RS-485
Internal
500 m max. in total
E5ZE
Pin
13
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