Operation With Continuous Send; Transmission Of A Block Of One To 512 Bytes; Table 40: Receive Data; Table 41: Receive 2 Characters - WAGO 750-652/040-000 Manual

62 Commissioning

Table 40: Receive Data

Status byte 0
0-xxx X (00x)
'0XX1. 001X'
After the 2 characters have been processed, RA is inverted.

Table 41: Receive 2 Characters

Control byte 0
'0XXX XX1X
The receipt of additional characters is indicated by different values for RA and RR.

Table 42: Receipt of Additional Characters

Status byte 0
'0XXX. X01X'
'0XX1. 000X'
After the characters have been processed, RA is inverted.

Table 43: Output Process Image After Data Transfer

Control byte 0
'0XXX XX0X
8.3.5

Operation with Continuous Send

8.3.5.1

Transmission of a Block of One to 512 Bytes

The output buffer is filled up with data up to number n (n ≤ 512 bytes)
To transmit the buffer content, the bit 3 (SC) of the control byte 0 is set by the
controller. The I/O module begins with the data transmission and the bit 3 (BUF_E)
of the status byte 1 is reset.
If all data is transmitted, the bit 3 (BUF_E) of the status byte 1 is set.
The controller takes bit 3 (SC) of the control byte 0 back from the controller.
The end of the transmission from the I/O module is detected this way.
Manual
Version 1.3.0
750-652/040-000 Serial Interface RS-232/RS-485 XTR
Status byte 1 Input byte 0
'0XXX. 1XXX' XX
'0XXX. 1XXX' "W"
Control byte 1
'0XXX.XXXX'
Status byte 1 Input byte 0
'0XXX. 1XXX' XX
'0XXX. 1XXX' "G"
Control byte 1
'0XXX.XXXX'
WAGO-I/O-SYSTEM 750 XTR
Input byte 1
XX There are no receive data
available.
"A" The data is available in the
input bytes.
Output byte 0 Output byte 1
XX
Input byte 1
XX There are no receive data
available.
"O" The data is available in the
input bytes.
Output byte 0 Output byte 1
XX
XX
XX