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2 Simple Application Controllers
The Command String 7
7 - 17
7.5.2 Write Data Transmission
The WRITE Data Transmission area is different in reading BIT and WORD information. The
following illustration demonstrates the format structure for writing BIT data. The device status is
a single byte.
BIT Data
Format B - WRITE Message - BIT data
Example - WRITE Message - BIT data
Table 7.12: Data Transmission explained
Control element Hex Description
No. of devices 01H
There is only one intended device to be WRITTEN to the
controller
Device Code 48H The device is from the Communication BIT Range.
Device No. (LB) 04H
The lower byte in conjunction with the higher byte indicates
Communication Word device 4 is the intended device.
Device No. (HB) 00H
The higher byte in conjunction with the lower byte indicates
Communication Word device 4 is the intended device.
Device Status 01H The Communication BIT device will be turned ON.
No. comm
bytes
Format No.
Station
No.
Command
No. of devices
Device code
Device No.
(LB)
Device No.
(HB)
Sum check
(LB)
Sum check
(HB)
Data Transmission
Data Transmission
Device status
S
T
X
E
T
X
Data Transmission
Data Transmission
No. of
devices
01H
Device No.
(LB)
04H
Device
code
48H
Device No.
(HB)
00H
Device
status
01H