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