2020-01
26
WCS* Read Head Position Encoding System
RS-485 Interface (LS1xx*, LS2xx*)
OUT message
OUT means that the position value cannot be determined because the position of the code rail
in the read head gap is incorrect.
OUT A (A=All) means that there is no code rail in the read head gap; all light barriers of the
read head report a signal.
The "OUT" message may be desirable and correct, e.g., if the code rail is interrupted and the
read head sends this information between the individual rail pieces to the control panel. If the
"OUT" message must not occur, the following test steps must be performed:
If these measures do not solve the problem, the read head must be sent for inspection.
Function number for read head F0 = 0 (send position value)
ERR DB OUT SST Description State
0 x 1 x P00...P18 = 0 -> read head is partially outside the code
rail
OUT
P00 = 1, P02...P18 = 0 -> read head is completely
outside the code rail
OUT A
Result of the check Remedy
The upper edge of the code rail is outside the
tolerance range of the read head
• Align the code rail precisely
• Align the read head
• Use the guide system for the read head
The plastic protective lenses on the optical
unit are dirty or scratched
• Clean optical unit
• Ensure the read head is cleaned
• Change the protective lenses
Incidence of extraneous light • Protect the read head against any inci-
dence of extraneous light
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