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Remote I/O Communications Characteristics
CVM1- and CV-series PLCs (Synchronous Mode)
Minimum I/O Response
Time
112
The minimum I/O response time occurs with the I/O timing shown in the fol-
lowing diagram.
PLC
Master Unit
Input
Output
T
T
:
The Input Slave's ON (OFF) delay (Minimum value: 0)
IN
T
:
The Output Slave's ON (OFF) delay (Minimum value: 0)
OUT
T
:
The Input Slave's communications time/slave
RT-IN
T
: The Output Slave's communications time/slave
RT-OUT
T
:
The PLC's cycle time (instruction execution + peripheral servicing)
PLC0
Note Refer to the information on each slave in SECTION 5 to SECTION 7 for
details on Input and Output Slaves' ON and OFF delay times. Refer to 7-1-2
CompoWay/F Communications Cycle Time and Refresh Time and the Opera-
tion Manual for the PLC being used for details on the PLC's cycle time.
The minimum I/O response time (T
T
= T
+ T
MIN
IN
RT-IN
Cycle time
Instruction
Periph-
Periph-
eral ser-
eral ser-
execution
vicing
vicing
T
T
IN
RT-IN+
PLC0
) is the total of the following terms:
MIN
+ 2 × T
+ T
PLC0
RT-OUT
Section 7-1
Instruction
Periph-
Instruction
eral ser-
execution
execution
vicing
T
T
T
PLC0
RT-OUT
OUT
+ T
OUT
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