Hitachi S10mini OD.RING Hardware Manual page 56

⑬ Connect the optical fiber cables to the new OD.RING module, the cables that were removed
from it in Step ⑥.
⑭ Set the CPU module's LADDER, MODE, and PROTECT switches in the same way as you
wrote down in Step ②.
⑮ Turn on the power supply of the controller unit and check that the new OD.RING module is
running normally. To accomplish this check, ensure that the new OD.RING module's
PR-/SR-RX and PR-/SR-TX LEDs are all lit, but its ERR LED is not.
Add-on procedure (for adding on a sub-module)
① Write down, on a piece of paper, the current settings of three switches, labeled LADDER
(toggle switch), MODE (toggle switch), and PROTECT (toggle switch), respectively, that are
accessible at the front side of the CPU module, the one that is installed in the controller unit
in which you are adding on an OD.RING module.
② Ensure that your application system has been shut down. Then, set the CPU module's
LADDER switch in STOP position and turn off the power supply of the controller unit.
③ Mount the add-on OD.RING module in place according to the instructions given under
"1.2 Installing Optional Modules."
④ According to the information provided under "3.1 Names and Functions of Each Part," set
the add-on OD.RING module's MODU.NO switch in such a way that a new sub-module No.
setting will not duplicate with the current MODU.NO switch setting of the existing main
OD.RING module.
⑤ According to the instructions given under "5.2 Setting Switches," set the new OD.RING
module's CPL NO U and L switches in such a way that a new number setting will not
duplicate with any of the current number settings of the existing OD.RING modules forming
the full-duplex ring.
⑥ Connect the personal computer and the CPU module together with the RS-232C cable.
Then, turn on the power supply of the controller unit and set parameters for the add-on
OD.RING module (sub-module) by using the S10 OD.RING/SD.LINK System.
⑦ Reset the CPU module by pressing the RESET switch at its front.
⑧ Turn off the power supply of the controller unit and connect the optical fiber cables from the
ring to the add-on OD.RING module.
⑨ Set the CPU module's LADDER, MODE, and PROTECT switches in the same way as you
wrote down in Step ①.
⑩ Turn on the power supply of the controller unit and check that the add-on OD.RING module
is running normally. To accomplish this check, ensure that the add-on OD.RING module's
PR-/SR-RX and PR-/SR-TX LEDs are all lit, but its ERR LED is not.
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6 MAINTENANCE