Mitsubishi Electric melsec q00ujcpu User Manual page 272

(2) Specifications
(a) Transmission specifications
Table6.37 shows the transmission specifications of RS-232 for the serial communication function of the CPU
module.
Check that the specifications of the personal computer and HMI match those of Table6.37 before using the
function.
Table6.37 Transmission specifications of the serial communication function
Item
Communication method
Synchronization method
*1
Transmission speed
Data format
*2
MC protocol format
(automatic detection)
*2
Frame
Transmission control
*1
Sum check
Transmission wait time
*1
RUN write setting
Overall cable distance
Can be set in the PLC parameter dialog box
*1:
*2: Table6.38 shows the relationship between the MC protocol formats and frames.
Communication in ASCII code
Communication in binary code
Default
Full-duplex communication
Asynchronous method
19.2kbps
• Start bit: 1
• Data bit: 8
• Parity bit: Odd
• Stop bit: 1
• Format 4 (ASCII)
• Format 5 (binary)
• QnA-compatible 3C frame
• QnA-compatible 4C frame
DTR/DSR control
Checked
*1
No waiting time
Prohibited (deselected)
15m
.
Table6.38 Relationship between the MC protocol formats and frames
Function
QnA-compatible 3C frame
QnA-compatible 4C frame
QnA-compatible 4C frame
CHAPTER6 FUNCTIONS
Setting range
-
-
9.6kbps, 19.2kbps, 38.4kbps, 57.6kbps, 115.2kbps
-
-
-
-
Checked/not checked
No waiting time, 10ms to 150ms (in increments of
10ms)
Permit (checked), prohibited (deselected)
-
Format 4
: Available,
1
2
3
4
5
6
7
8
Format 5
: Unavailable
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