308
(4) Processing time of the dedicated instructions
The following table lists approximate operation processing time of each dedicated instruction. The operation
processing time differs depending on the system configuration and the scan time on the sending/receiving
stations.
*1 The processing time of the ECPRTCL instruction differs depending on a connected device or a protocol.
Instruction
name
Number of access points
Processing time (unit: ms)
Instruction execution conditionLCPU
Condition 1) Condition 2) For 1) For 2)
BUFRCV
1 word
1017
words
0.80 1.16
TCP/IP communications, binary code communications, and fixed
buffer communications (procedure exists)
BUFRCVS 0.23 0.61
BUFSND 7.44 10.80
CLOSE 1 port 2.36 A UDP/IP transmission port is closed.
ERRCLR All error information is cleared. 1.06
ERRRD An initial error code is read. 1.04
OPEN 1 port 2.12 A UDP/IP transmission port is open.
RECVS
1 word
960 words
0.23
0.62
Communications between E71-connected stations
480 words 0.42
READ
960 words
7.20
12.50
480 words 9.84
SREAD
960 words
7.28
12.60
480 words 9.92
RECV
960 words
1.38
2.00
480 words 1.86
SEND
960 words
4.64
8.32
480 words 6.32
WRITE
960 words
7.28
13.00
480 words 9.84
SWRITE
960 words
7.36
13.00
480 words 10.20
ZNRD
230 words
7.12 7.84
ZNWR 7.04 8.48
UINI 11.20
Time between the UINI instruction accepted and reinitialization
completed (X19 turning on)
ECPRTCL
*1
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