Figure 6-2 A Sample System Configuration - Hitachi S10mini OD.RING Hardware Manual

6.5 Replacing or Adding On the Module
The OD.RING module may be replaced in online mode; that is, its replacement may be performed
while communications are in progress with the other existing OD.RING modules.
What you should get in preparation
① Personal computer (with Hitachi's S10 OD.RING/SD.LINK System installed in it)
② RS-232C cable (or 10BASE-T cable if the communication module used is an ET.NET
module)
③ New or add-on OD.RING module (LQE010/015)
④ Copies of the parameter values for the module to be replaced. (These copies are prepared
for use in cases where the parameters are not accessible for some reason.)
⑤ The above-mentioned ET.NET module is an optional module and, if it is mounted in place,
may be selected as the type of communication module to be used. For more information,
refer to Section 2.1, "Names and Functions of Each Part," and Section 3.2, "Mounting the
Module," in the User's Manual, Option ET.NET (LQE520) (manual number SVE-1-103).
Replacement procedure
Suppose that your system has a system configuration as shown in Figure 6-2, and that you want
to replace module B in the system configuration. Then, perform the replacement procedure
described below.
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.
Secondary ring
A
Primary ring
C
Note: Each of the modules labeled A thru D in
this configuration is an OD.RING module.

Figure 6-2 A Sample System Configuration

B
D
6-9
6 MAINTENANCE