Omron PRT1-COM Operation Manual page 147

Counter Units
Components
TS Indicator (Refer to page 162.)
Shows the communications status of the I/O Unit interface.
Normal communications: Lit green
I/O Unit interface error:
During initialization, or with no power supply: Not lit
I/O Unit Interface
Communications Connector 1
(on the Communication Unit side)
Internal Circuits
Lit red
U.ERR Indicator (Refer to page 163.)
Unit error: Lit red
Unit normal: Not lit
A, B Indicator
Lit when the encoder
input is ON.
Terminal Block
Note Setting for the Counter Unit is carried out in a PC word (output area allocated to
the Counter Unit).
Internal
circuits
IN Indicator
Lit when the external
input is ON.
OUT1, OUT2 Indicator
Lit when external out-
put is ON.
I/O Unit Interface
Communications Connector 2
(on the terminator side)
DIN Track Mounting Hook
Indicators for A and B only
Photo-
coupler
Photo-
coupler
Low voltage
Photo-
coupler
Fuse
Section 7-3
137