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(iv) Contact health check
The SPOS01 function has contact health check feature for the BO circuits; hence, the user is
able to connect an output signal to the contact health check function when Fixedlogic is set for
scheme switch [SPOS01-LGXFEOT]†. Consequently, the SPOS01 function can determine
whether the signal has been successfully output from the BO. If a failure is reported, the
SPOS01 function determines that the signal has not been output successfully to the BO; then,
the command On or Off is canceled immediately and the SPOS01 function returns to the “Wait
for a command” stage.
†Note: Table 4.1-29 shows settings for the health check feature in the other SPOS
functions.
Setting for “Select command On/Off”
For example, the point “SPOS01_SL_BO_FLG” is connected to the BO1 circuit for the issuing
of the command, the user can connect point “BO1-RB” with the contact health check function
using the setting [SPOS01-SLBORD]. Do not key the point “SPOS01_SL_BO_FLG”.
“SPOS01_SL_BO_FLG”
(510001_8501011F76)
Selection logic in
SPOS01
Signal connected by
setting [SPOS01-SLBORD]
“BO1-RB”
(200B01_8002001113)
Contact health check
logic in SPOS01
Result of contact
health check in SPOS01 selection
Connection made by the user
Figure 4.1-34 Example of connection of “Select command On” for the health check feature
Setting for “Operate Command On”
Similarly the point “BO2-RB” must be applied for the setting [SPOS01-OEXBORD].
Signal designated by
setting [SPOS01-OEXBORD]
Contact health check
logic in SPOS01
Result of contact
Health check
“SPOS01_OEX_BO”
“510001_8201011DD3”
“BO2-RB”
“200B01_8102011113”
Connection made by the user
Figure 4.1-35 Example connection of “Operate Command On” for the health check