HEIDENHAIN TNC 415 (259 9x0) Service Manual - Manual (Page 172)

SERVICE MANUAL TNC 415B/425
Page 167
Issue: 20.08.95
21.7.2 Exchanging the PLC I/O Board PL 410
a) Observe the exchange instructions in section 21.1!
b) Switch off the main switch.
c) Loosen the connectors at the PL 410.
Loosen clamp connection
d) Loosen the PL 410 mounting screws
e) The new PLC I/O board PL 410 is mounted in reverse order:
•
Engage all connectors.
•
Check the correct position of the switch ENABLE ANALOGUE INPUTS.
(ON position: analogue part activated, other position: analogue part not activated)
•
Switch on the main switch.
Exchange is now finished.
*
Warning!
Send and store the boards only in the original packaging material that protects
them from acquiring static charge. Never use conventional plastics to wrap the boards in.