Mitsubishi Electric FX5 User Manual page 146

• Receive data and amount of data received
Receive data
Receiving
completed
SM8562
Cleared
when header
is received.
Amount of
data
received
SD8561
Receiving sum
(calculation result)
SD8564
Precautions
When odd data is received, the higher-order 8 bits of data of the last device holds the data received previously.
5 NON-PROTOCOL COMMUNICATION
144
5.7 Programming
Header Data area
DLE STX 35H 36H 37H
Low High Low High Low
order of order of order of order of order of
SD8623 SD8623 D200 D200 D201
Within the upper limit of number of
devices (bytes) to be received, that is
specified by "n2".
Range of data stored in data
registers
2
1
0
Increments each time
data is received.
00H 35H 6BH
Terminator Sum data
38H DLE ETX 45H 44H
High Low High High Low
order of order of order of order of order of
D201 D202 D202 sum sum
Not stored in
data registers.
6
5
4
3
The calculation
result is converted
into ASCII codes,
and compared.
A2H DAH EAH EDH
The order is different from
the data area.
CR LF
Set when
Reset it
receiving is
in the
completed.
program.
Cleared
when the
receiving
complete flag
is cleared.
00H