Omron CJ1W-PNT21, Инструкции по эксплуатации

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4-9
4 Data Exchange with the CPU Unit
CJ-series PROFINET IO Controller Unit Operation Manual for NJ-series CPU Unit (W511)
4-2
Device V
ariable
s for C
J-series U
n
it
(Sof
tware Switch
es, S
tat
uses)
4
4-
2-2 U
nit S
tatus
Note The Set Output Data Valid switch controls the Provider Status in the Output Data sent from the
IO Controller to the IO Device. If the IO Device is receiving Output Data with the Provider Status
bit set to invalid then the IO Device will discard the Output Data. The Provider Status can be
used in a redundant IO Controller setup where the Active IO Controller sends it Output Data with
the Provider Status set to valid. The other IO Controller is then in Standby mode and has its Pro-
vider Status set to invalid. To change from Active to Standby and vice versa only the Set Output
Data Valid switch must be set or reset. The IO Device will only use the output data that is valid.
As there is no need to first open connections and sent configurations as this already has been
done this change over is very fast. When the Output Data Valid flag is CPU mode dependent,
the Output Data Valid flag in this word will be ignored.
The following device variable for CJ-series Unit is used to reference all information of Unit Status.
The following device variables for CJ-series Unit are used to reference individual information.
Name of device variable
for CJ-series Unit
Type R/W Area Function
*_ClrAllAlmCmd BOOL RW Clear all alarm
bits The clear alarm bits switch will clear all alarm
flags for all IO Devices. It is rising edge trig-
gered. The unit will set the switch to OFF when
all alarm flags are cleared.
FALSE
→
TRUE:
Clear alarm bits for all IO Devices
TRUE
→
FALSE:
No Action
*_OutDatValCmd BOOL RW Set Output
Data Valid FALSE: Mark all output data sent by the IO Con-
troller as invalid. IO Devices will ignore the data.
TRUE: Mark all output data sent by the IO Con-
troller as valid. IO Devices will accept the data
and process it.
4-2-2 Unit Status
Name of device variable
for CJ-series Unit
Type R/W Area Function
*_UnitSta WORD RO Unit Status Bit 00: Unit error flag
Bit 01: Controller error flag
Bit 02: Reserved by system
Bit 03: Error log contains new errors
Bit 04: Parameter transfer in progress
Bit 05: Reserved by system
Bit 06 Local parameter storage error
Bit 07: Local parameter load error
Bit 08: Reserved by system
Bit 09: File read error
Bit 10 to 12: Reserved by system
Bit 13: Error log storage error
Bit 14 and 15: Reserved by system