Omron CJ1W-DRM21, CS1W-DRM21 operation manual Communications Cycle, Time PC Cycle Time

TRM:

TIN:

TOUT:

Remote I/O Communications Characteristics			Section 8-1
	TIN:	The Input Slave’s ON (OFF) delay
	TOUT: The Output Slave’s ON (OFF) delay
	TRM:	Network’s communications cycle time (See page 191.)
	TPC:	The PC’s cycle time (See note below.)
	Note The PC’s cycle time will be delayed as shown below for one De-
		viceNet Unit. For details, refer to Refresh Time on page 192.
		0.7 ms + (number of occupied words ⋅ 0.001 ms)
	The maximum I/O response time (TMAX) is the total of the following terms:
	TMAX = TIN + TRM ⋅ 2 + TPC ⋅ 3 + TOUT
Communications Cycle	The maximum I/O response time will be as shown below if the DeviceNet Unit
Time < PC Cycle Time	takes in data immediately after I/O refreshing and if the communications cycle
	time is shorter than the PC cycle time.
PC		Instruction	Instruction
		execution	execution

Transfers to the shared RAM when communications cycle is completed.

Communications cycle

Slave

The Input Slave’s ON (OFF) delay

The Output Slave’s ON (OFF) delay

Network’s communications cycle time (See page 191.)

TPC: The PC’s cycle time (See note below.)

Note The PC’s cycle time will be delayed as shown below for one De- viceNet Unit. For details, refer to Refresh Time on page 192.

0.7 ms + (number of occupied words ⋅ 0.001 ms)

The maximum I/O response time (TMAX) is the total of the following terms:

TMAX = TIN + TRM ⋅ 2 + TPC ⋅ 2 + TOUT

Note 1. Refer to the CompoBus/D (DeviceNet) Slaves Operation Manual (W347) for details on the Input and Output Slaves’ delay times.

2.Refer to Refresh Time on page 192 and to the PC’s Operation Manual for details on the PC’s cycle time.

193