Mitsubishi Electric QJ71MB91 User Manual page 166

7
PARAMETER SETTING
Address
CH1 CH2
0207 0387
H H
(519) (903)
0208 0388
H H
(520) (904)
Automatic
0209 0389
H H
communication
(521) (905)
Parameter 1
020A 038A
H H
(522) (906)
020B 038B
H H
(523) (907)
020C to 038C to Automatic
H H
037F 04FF communication
H H
(524 to (896 to Parameter 2 to
895) 1279) 32
(1) Setting parameter existence
(2) Target station No.
(3) Request interval timer value
Master Request
message
(QJ71MB91)
Slave
7
- 5 7.2 Automatic Communication Parameter
7.2.1 Automatic communication parameter details
Table7.1 Automatic communication parameter list (Continued)
Parameter name
Target MODBUS
device head number
Read
Setting
Access points
Head buffer memory
address
Write
setting
Target MODBUS
device head number
Access points
(Same as in automatic communication parameter 1)
Set whether to enable or disable the automatic communication parameters.
Specify a slave to which request messages are sent.
The target station No. is entered in the address field of the request message sent to
the communication target slave device.(
The Request interval timer represents the interval between any successive request
message transmissions in the automatic communication function.
The time from when the QJ71MB91 sends a request message until it sends the next
request message is measured.
Request interval timer
Request
Response
message
Message
processing
Figure 7.2 Request interval timer
Setting range
0 to 65535
0 to 2000
0000 : None
H
3000 to 3FFF :
H H
CH1 write data storage area
4000 to 4FFF :
H H
CH2 write data storage area
0 to 65535
0 to 1968
Section 4.2)
Receiving
Request
response
message
message
Request
message
processing
Default Reference
0
section (7)
0
section (8)
0000
H
section (6)
0
section (7)
0
section (8)
Receiving
response
message
Response
Message
This
This
This
This
This