Mitsubishi Electric LE7-40GU, Instruction Manual, Page: 122 / 154

120
7 MODBUS/RTU, ASCII (SLAVE)
7.3 Communication Setting
Communication parameter settings
With this communication function, communication setting of LE7-40GU is necessary.
Communication setting procedure
1.
Select "MODBUS (RTU)" or "MODBUS (ASCII)" on the "Network mode selection" screen of the LE7-40GU screen.
2.
According to the slave station No. to be assigned, change "Station No. in MODBUS" on the LE7-40GU screen, in
accordance with the slave station No. to be assigned to a value within "1" to "247"
*1
.
*1 If the set value is "0", MODBUS will not operate.
3.
Change with "MODBUS format selection" on the LE7-40GU screen according to the communication format to be used.
*1 When setting network mode selection to 3: MODBUS (RTU), data length (b0)=7 bits cannot be set.
*2 When parity (b1-2) and baud rate (b4-7) are made unavailable, network mode selection=0 (no function), N:N Network station No.=1,
MODBUS station No.=1, MODBUS communication format=0x0051 can be rewritten at the next power ON after the setting.
4.
Restart LE7-40GU.
Bit Name Description
0 (bit=OFF) 1 (bit=ON)
b0 Data length
*1
7 bit 8 bits
b1
b2 Parity b2, b1
(0, 0): Unavailable
(0, 1): Odd
(1, 0): Unavailable
*2
(1, 1): Even
b3 Stop bit 1 bit 2 bits
b4
b5
b6
b7 Baud rate (bps) b7, b6, b5, b4
(0, 0, 0, 0): Unavailable
*2
(0, 0, 0, 1): Unavailable
*2
(0, 0, 1, 0): Unavailable
*2
(0, 0, 1, 1): Unavailable
*2
(0, 1, 0, 0): Unavailable
*2
(0, 1, 0, 1): 1200
(0, 1, 1, 0): 2400
(0, 1, 1, 1): 4800
b7, b6, b5, b4
(1, 0, 0, 0): 9600
(1, 0, 0, 1): 19200
(1, 0, 1, 0): 38400
(1, 0, 1, 1): 57600
(1, 1, 0, 0): Unavailable
*2
(1, 1, 0, 1): 115200
(1, 1, 1, 0): Unavailable
*2
(1, 1, 1, 1): Unavailable
*2
b8 to b15 Unavailable
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