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7.4 Dedicated Instruction Transmission Delay Time
7.4.1 Link Dedicated Instruction Transmission Delay Time
7
PROCESSING TIME
7.4
Dedicated Instruction Transmission Delay Time
7.4.1
Link Dedicated Instruction Transmission Delay Time
The following shows the calculation formulas for the link dedicated instruction
transmission delay time (the time taken from issuing an instruction until receiving a
response).
(1) In the case of a single network system
(a) Transmission delay time for the SEND/RECV/RECVS/ZNRD/ANWR instruction
* 1 Total for the number of mounted network modules.
* 2 For the scan time delay due to tracking transfer, refer to the following manual.
QnPRHCPU User's Manual (Redundant System)
Table 7.15 When receiving station is non-redundant system [ms]
Sending station
Receiving station (non-redundant system)
Non-redundant system
TD1 = (ST + T) × 2 + LS × 11 + (SR + R)
Redundant system
TD1 + TsT × 2
Table 7.16 When receiving station is redundant system [ms]
Sending station
Receiving station (redundant system (control system CPU))
Non-redundant system
TD2 = (ST + T) × 2 + LS × 11 + (SR + R + TsR)
Redundant system
TD2 + TsT × 2
TD1, TD2: Transmission delay time for the SEND/RECV/RECVS/ZNRD/ZNWR instruction
ST: Sequence scan time on sending side (except link refresh time and scan time delay due to tracking
transfer)
SR: Sequence scan time on receiving side (except link refresh time and scan time delay due to
tracking transfer)
T: Link refresh time on sending side
*1
R: Link refresh time on receiving side
*1
TsT: Scan time delay due to tracking transfer on the sending side
*2
TsR: Scan time delay due to tracking transfer on the receiving side
*2
LS: Link scan time
Summary of Contents for QJ71GP21-SX
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