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4. SAFETY OBSERVATION FUNCTION
(c) Cautions for executing test pulse diagnosis by multiple devices.
When there are multiple target input devices of the test pulse diagnosis, share PLSA/PLSB with
those input devices. A short-circuit failure between wirings sharing PLSA/PLSB cannot be detected
with the test pulse diagnosis. Execute an input device fixing-diagnosis at start-up (refer to section
4.4.1 (4)) in addition.
(d) Parameter setting
Set the following parameters for DI1_ to DI6_ which input devices are assigned to by [Pr. PSD02
Input device selection DI1] to [Pr. PSD07 Input device selection DI6].
Execute the test pulse diagnosis or select with [Pr. PSD24 Input device - Test pulse diagnosis
execution selection 1] and [Pr. PSD25 Input device - Test pulse diagnosis execution selection 2]. Set
the off time of test pulse outputted from PLSA/PLSB to [Pr. PSD26 Input device - Test pulse off
time].
The achievable safety level will be affected depending on using input devices and parameter
settings of this function. Refer to section 4.1 for details.
Switch
Parameter
PSD24
Input device - Test pulse diagnosis execution selection 1
PSD25
Input device - Test pulse diagnosis execution selection 2
PSD26
Input device - Test pulse off time
4 - 13
CN10A
DC24VA
PLSA
24 V DC
DICOMA
DI1A
DI2A
Shorted
CN10B
Switch
DC24VB
PLSB
24 V DC
DICOMB
DI1B
DI2B
Name
MR-D30
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