Setting In Q Serial Communication Unit; Communication Setting Specifications - Mitsubishi Electric F920GOT-K Hardware Manual

GOT-F900 SERIES (CONNECTION)
11.3

Setting in Q Serial Communication Unit

In Q computer link connection, the switches in the serial communication unit should be set as described
below. When setting the switches for communication with the GOT-F900, use the GX Developer (as
described in the next page).
11.3.1

Communication Setting Specifications

This section explains the communication specifications.
1) Setting the communication protocol
Set the communication protocol so that the COM port of the serial communication unit connected to
the GOT-F900 is set to the dedicated (MC) protocol format 5.
Serial communication unit
QJ71C24
QJ71C24-R2
2) Setting the transmission specifications setting switches
Set the transmission specifications setting switches of the serial communication unit to realize the
transmission specifications shown in the table below.
For the switch setting method, refer to the manual of the serial communication unit.
Item
Transmission speed
Data bit
Parity bit
Data
format
Stop bit
Sum check
Write in RUN mode
- The specifications such as the transmission speed are fixed on the GOT-F900 side, and cannot be
changed.
b7 b6 b5 b4 b3 b2 b1 b0
3) Setting the station number setting switch
Set to 00H in both the GOT-F900 and the serial communication unit (switch 5).
4) Turning on the power again
After setting the QnA computer link, make sure to turn off the power once, then turn it on again.
(Even if the RESET switch in the QnA Series PLC is pressed, the changed setting does not become
valid.)
COM port
CH1(RS-232C)
CH2(RS-422)
CH1(RS-232C)
CH2(RS-232C)
Specifications Set value
38400 bps 09H
8 bits
Provided (odd)
1 bit 66H
Provided
Possible
CH1 side: Switch 1 (lower)
CH2 side: Switch 3 (lower)
Bit Description
b0 Operation setting
b1 Data bit
b2 Parity bit
b3 Odd/even parity
b4 Stop bit
b5 Sum check code
b6 Write in RUN mode
b7 Setting change
Connection of MELSEC-Q Series PLC 11
Switch Set value
Switch 2
Switch 4
5H
Switch 2
Switch 4
Switch
CH1
(CH1 side: Switch 1 (upper)) (CH2 side: Switch 3 (upper))
(CH1 side: Switch 1 (lower)) (CH2 side: Switch 3 (lower))
OFF (0) OFF (1)
Independent Interlocking
7 8
Not provided Provided
Odd Even
1 2
Odd Provided
Forbidden Permitted
Forbidden Permitted
Remarks
For communication using
binary codes of QnA
compatible 4C frame
CH2
Remarks
Make sure to set the CH1
side to OFF.
The parity bit is excluded.
Vertical parity
Valid only when the parity bit
is set to "odd" or "even".
−
−
−
−
11-9
11
12
13
14
15
16
17
18
19
20