TD 91684GB
16 April 2015 / Ver. G
Installation Guide
T942C and T942C/2 Central Unit
18
1.5 Installation Test Procedure
For better indication of whether the system is operating properly or not, a PC equipped with
a terminal emulating program can be connected to connector J09 (see 1.4.10 Connection of
PC on
page 15). Section 1 on switch SW02 must then be set in position OFF.
1 Check that sections 2, 3 and 5-8 on switch SW
02 are set to OFF. If reset of the non-
volatile memory is desired when restarting the Central Unit, SW02 section 4 must be
set to ON, otherwise it is set to OFF.
Check that jumper S03 is jumpered, and jumpers S17A and S17B are set as fo
llows:
S17A: po
sition 2-3
S17B: positi
on 1-2
Check if jumper S10A is to be jumpered or not.
2 Check that SW01 is set to the correct address and SW02 is set for desired
pa
rameters, and that module key IC08 is installed.
Units with S942C Software
3 Energize all the units in the system.
Function indicator LED01 on T942C should light
red for about 1 second and then change to a flashing orange.
Figure 23. Function Indicator.
At start-up the Central Unit begins with a short self-test for a few seconds. The
function
indicator indicates this by short blinks at one second intervals. The
parameter list in the FLASH PROM is copied to the non-volatile memory.
If no faults are detected, the Central Unit then makes a survey of the m
odules
connected to the data buses. The function indicator blinks rapidly (orange - 5 times/
second) until all data buses are surveyed. After this the function indicator lights
steadily.
If it continues to indicate with a steady red, check that supply voltage is
12.5 V DC ± 10%.
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