Table 2-1 Module Number Setting Switch - Hitachi SD.LINK User Manual

2 NAMES AND FUNCTIONS OF EACH PART
2.1 Names and Functions of Each Part
Figure 2-1 SD.LINK Module
Front View
Up to two units of the SD.LINK (LQE030/530) module and the OD.RING
(LQE010/015/510/515) module can be intermixed. Set the module number
setting switch on either module to main and that on the other to sub.
If the module number setting switch is set to 'E' or 'F' and then the power to
the SD.LINK module is cycled or it is reset, its error LED will glow but this is
not a sign of fault.
① Primary ring (PR) LEDs
TX: Glows when the local station is sending data.
RX: Glows when the local station is receiving data.
①
ERR: Glows when a hardware error has occurred.
A parameter error will occur if the SD.LINK module is mounted on
②
a model different from the one that has been defined as a parameter
in "4.6 Commands."
③
② Secondary ring (SR) LEDs
Similar to ①.
③ Module number (MODU No.) setting switch
④ Set the number of units connected, the distinction between a main
module and a submodule, optical level measurement and so on.

Table 2-1 Module Number Setting Switch

Function
⑤ 33 to 64 units connected
17 to 32 units connected
9 to 16 units connected
⑥
1 to 8 units connected
Not used (T/M1)
Not used (T/M2)
Not used (T/M3)
Optical level measurement
④ CPL number (CPL No.) setting switch
Set a unique number to identify each SD.LINK module connected to
the line, between /00 and 3F.
⑤ Primary ring (PR) optical module receptacle
TX (transmit): Connected to the primary ring RX of the next-stage
RX (receive): Connected to the primary ring TX of the previous-
⑥ Secondary ring (SR) optical module receptacle
TX (transmit): Connected to the primary ring RX of the next-stage
RX (receive): Connected to the primary ring TX of the previous-
NOTICE
Main module
setting number
module.
stage module.
module.
stage module.
2-2
Submodule
setting number
0 1
2 3
4 5
6 7
8 9
A B
C D
E F