Mitsubishi Electric CR800 Series Ethernet Function Instruction Manual page 77

 Read data / write data
The value read from the device is stored for reading. The value to be written to the device is stored for writing.
The data arrangement will differ depending on the bit unit (subcommand: 001, 003) or word unit (subcommand:
000, 002).
• In bit units (subcommand: 001, 003)
When performing data communication in ASCII code, send data for the number of specified devices from the
specified start device in the order from higher-order byte to lower-order byte. The ON state is denoted as "31H" (1),
and the OFF state is denoted as "30H" (0). Use codes in upper case characters when specifying letters of the
alphabet.
Example
ON/OFF state of five devices starting from M10
Device
code
When performing data communication in binary code, specify a single device with 4 bits, and send data for the
number of specified devices from the specified start device in the order from higher-order byte to lower-order byte.
The ON state is denoted as "1", and the OFF state is denoted as "0".
Example
ON/OFF state of five devices starting from M10
Head
device
Number of
Head device
devices
Device Number of
Data
code devices
Data
"0" is shown when the number of
points is an odd number.
3 Description of functions
3-51