WCS* Read Head Position Encoding System
RS-485 Interface (LS1xx*, LS2xx*)
2020-01
27
4.4 Status and Error Messages
Error
number Cause Remedy
1
2
WCS read head cannot calculate posi-
tion value because:
Optical unit is dirty Clean optical unit
Plastic protective lenses are scratched Align WCS read head and code rail cor-
rectly; replace scratched plastic protec-
tive lenses
Position of the read head in relation to the
code rail is incorrect
Check the position of the WCS read head
in relation to the code rail; install WCS
read head correctly
Light barriers have failed Check light barriers; if necessary send
for repair
3 RAM error, WCS read head Send WCS read head for repair
4 EPROM error, WCS read head Send WCS read head for repair
5 ROM error, WCS read head Send WCS read head for repair
6 Reserved
7 No position value available Message only after switching on the
WCS read head and/or after a RESET
8
9
10
11
12
Data transfer error between WCS read
head and interface module, data transfer
disrupted
Check the cable connection from the
WCS read head to the interface module;
check the shielding, protective earth,
cable routing (EMC)
13 WCS read head cannot be addressed by
the interface module
Check the cable connection from the
WCS read head to the interface module;
check the operating voltage of the read
head
14 Read head is located in the initialize or
diagnostic routine
Wait for initialization; exit diagnostics (set
the selector switch on the interface mod-
ule to 0 ... 7)
15 Interface module is not set for communi-
cation with multiple WCS read heads
Send interface module for correct config-
uration setting
19 RAM error in interface module Send interface module for repair
20 EPROM error in interface module Send interface module for repair
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