Hitachi EH-150 Series - Page 102

Chapter 6 Communication Mode
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Modbus Slave
(1) Ladder program ( Word I/O mapping used )
[EH-CPU]
WR106 = H0A00
WR107 = H0000
WR108 = H0000
WR109 = H0B00
WR10A = H0000
WR10B = HD000
WR10C = H0B00
WR10D = H1000
WR10E = HE000
WR10F = H0C00
WR110 = H0000
WR111 = HF000
TRNS 9 ( WY4A5 , WR0 , M0 )
WR7 = H0000 Initial setting command
WR8 = 200 Command timeout time
WR9 = H000A I/O address of sending data
WRA = H0100 ( WR100 )
WRB = H000A I/O address of receiving data
WRC = H0200 ( WR200 )
WRD = H0002 Size of receiving data area
S
R0
DIF1
R7E3
R7E3
M0
R7E3
s parameter
Sending data area
(Parameter for
initialization)
TRNS 9 command
TRNS 9 Execution
WR100 = H0022 No. of send data [byte]
WR101 = H0011 Communication mode
WR102 = H0001 Modbus mode (RTU)
WR103 = H180A Address & waiting time
WR104 = H0000 I/O mapping (B) (Not used)
WR105 = H0004 I/O mapping (W)
(Division number 4)
R7E3
I/O No. WR0
Modbus address H0000
I/O No. WL0
Modbus address HD000
I/O No. WL1000
Modbus address HE000
I/O No. WM0
Modbus address HF000
Sending data area
(I/O mapping for Word
setting)
X4A29