Request Data Length And Response Data Length; Monitoring Timer - Mitsubishi Electric MELSEC IQ-R series Reference Manual

Response message
ASCII code
D 0 0 0
44 30 30 30
H H H H

Request data length and response data length

For the request data length, specify the data length from the monitoring timer to the request data.
For the response data length, the data length from an end code to a response data (at normal completion) or an error
information (at abnormal completion) is stored.
Setting method
Specify the data length in hexadecimal. (Unit: byte)
■Data communication in ASCII code
Convert the numerical value to 4-digit ASCII code (hexadecimal), and send it from the upper digits.
■Data communication in binary code
Send 2-byte numerical value from the lower byte (L: bits 0 to 7).
Ex.
The data length is 24 bytes
ASCII code
0 1 8
0
30 30 31 38
H H H H

Monitoring timer

Set the wait time up to the completion of reading and writing processing.
Set the wait time from when E71 on the connection station requests processing to the access target to when the response is
returned.
• 0000H (0): Wait infinitely (Waits until a processing is completed.)
• 0001H to FFFFH (1 to 65535): Waiting time (unit: 250 ms)
To perform normal data communication, using the timer within the setting range in the table below is recommended depending
on the communication destination.
Access target
Connected station (host station)
Other station
Setting method
■Data communication in ASCII code
Convert the numerical value to 4-digit ASCII code (hexadecimal), and send it from the upper digits.
■Data communication in binary code
Send 2-byte numerical value from the lower byte (L: bits 0 to 7).
Ex.
When specifying 10H (16  250 ms = 4 seconds) for the monitoring timer
ASCII code
0 0 1 0
30 30 31 30
H H H H
Monitoring timer
0001H to 0028H (0.25 s to 10 s)
0002H to 00F0H (0.5s to 60s)
Binary code
D0 00
H H
Binary code
18 00
H H
Binary code
10 00
H H
5 MESSAGES OF ETHERNET INTERFACE MODULE
5.3 Details of Setting Data
5
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