Hitachi SD.LINK User Manual page 99

6 MAINTENANCE
① Write down, on a piece of paper, the current settings of the rotary switches (MODU No.,
and CPL No. U and L) that are, as shown below, accessible at the front side of module B.
② Write down also the current settings of two switches, labeled LADDER (toggle switch)
and T/M (rotary switch), respectively, that are, as shown below, accessible at the front side
of the LPU module installed in the same controller unit as module B.
③ Connect the personal computer and the LPU module together with the RS-232C cable.
LPU module's toggle and
rotary switches settings
LADDER
RUN STOP
T/M
RESET
ON OFF
RS-232C cable
④ Start Hitachi's S10V OD.RING/SD.LINK system and save the set values of all the existing
parameters. (If the existing parameters are not accessible for some reason, use the copies
of their set values [item ④] that were obtained in preparation.)
⑤ Set the LPU module's LADDER switch in STOP position and turn off the power supply of
the controller unit.
⑥ Remove the optical fiber cables from module B. To prevent dust and dirt from getting
into the connectors of both the removed optical fiber cables and module B, attach dust-
proof caps to those connectors.
⑦ Replace module B with the new one and set the new SD.LINK module's rotary switches in
the same way as you wrote down in Step ①.
⑧ Turn on the power supply of the controller unit and read in the parameter values that you
saved in Step ④, by using the S10V OD.RING/SD.LINK system.
⑨ Write the parameter values read in to the target from the S10V OD.RING/SD.LINK
system.
⑩ Check that all the set parameter values are identical to those that were saved in Step ④.
⑪ Reset the LPU module by setting the RESET switch in ON position and then in OFF
position at its front.
⑫ Turn off the power supply of the controller unit.
SD.
LPU
LINK
Power
RS-232C
PR-RX
supply
SR-TX
SR-RX
PR-TX
6-6
LQE530 SD.LINK module's
rotary switch settings
MODU
No.
U
CPL
No.
L
Optical fiber cables