Mitsubishi Electric MELSEC-Q00U(J)CPU User Manual page 235

(1) Specifications
(a) Transmission specifications
The following is the transmission specifications of RS-232 used for this function. Check that the specifications
of the personal computer or HMI from other companies match those in the following table.
Item
Communication method
Synchronization method
*1
Transmission speed
Data format
*2
MC protocol format
(automatic detection)
*2
Frame
Transmission control
*1
Sum check
*1
Transmission wait time
*1
RUN write setting
Overall cable distance
*1 The item is set in the PLC parameter of the programming tool. (
*2 Relationship between the MC protocol formats and frames is shown below.
Communication in ASCII code
Communication in binary code
(b) RS-232 connector specifications
The following is the specifications of the RS-232 connector of a CPU module.
Appearance
3
5
1
2
6
4
Mini-DIN 6 pins
(female)
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 (selected), prohibited (deselected)
-
Function
QnA-compatible 3C frame
QnA-compatible 4C frame
QnA-compatible 4C frame
Pin number
1
2
3
4
5
6
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
No waiting time
Prohibited (deselected)
15m
Page 455, Appendix 1.2.12)
Format 4
×
Signal
RD (RXD) Receive data
SD (TXD) Send data
SG Signal ground
-
DR (DSR) Data setting ready
ER (DTR) Data terminal ready
CHAPTER 3 FUNCTIONS
Default
: Available, × : Unavailable
Format 5
×
×
Signal name
-
233
3