Mitsubishi Electric MELSEC iQ-R Series User Manual page 64

Module READY (X1E)
Reception data read request
(X3)
Reception abnormal
detection (X4)
INPUT instruction
INPUT instruction completion
device
INPUT instruction completion
device + 1
(Normal completion/abnormal
completion)
Receive data count (Un\G1536)
Received data (from Un\G1537)
Start the programmable controller of the host station. The setting values specified with an Engineering tool are stored to
C24.
 When the amount of data specified by the receive end data quantity or data containing the receive end code is received
from the target device, the 'CH1 reception data read request' (X3) turns ON.
 After the control data for the INPUT instruction is stored in the device, the program executes the INPUT instruction and
reads the received data.
Before executing the INPUT instruction, check that the INPUT instruction completion device (M0) is OFF.
 Once reading of the received data is completed, the INPUT instruction completion device turns ON.
When the completion device + 1 (abnormal completion signal) turns ON, the error code is stored in the control data
completion status (S1 + 1).
■Program example
Category Label name
Module label C24_1
C24_1.stnCH1.bSet_Req_ReceptionRead
C24_1.stnCH1.bSts_ReceptionAbnormalDetection
Label to be defined Define the global label as shown below.
For information on the module FB to be used, refer to the following manual.
MELSEC iQ-R Serial Communication Module Function Block Reference
3 DATA COMMUNICATION USING NONPROCEDURAL PROTOCOL
62
3.1 Receiving Data from Target Device
(CH1)
Ò
Ó
Ô
(M0)
(M1)
m
Data reception
Data reception-1
Ó
ON during abnormal
reception detection
INPUT
Ô
Õ
n
Received data 1
Data reception-2
Description
Target module
CH1 Reception data read request
CH1 Reception abnormal detection
ON during abnormal
reception detection
INPUT
Õ
1 scan
1
Received data 2
Device

X3
X4