Mitsubishi Electric CR800 Series Ethernet Function Instruction Manual page 82

3 Description of functions
3.5.7.2.2. Read (Command: 0401)
Read the data from devices.
 Request data
Binary
Sub-
command
• Subcommand
When reading data
in bit units
When reading data
in word units
*1: Use subcommand 008 if accessing a link direct device, module access device, or CPU buffer memory
access device. When the subcommand is set to 008, the message format will differ. (Reading, writing by
specifying device extension)
• Device code
Specify the type of device to be read.
• First device No.
Specify the first number of the device to be read.
3-56
Device
Subcommand
code
First device
Device
Number
No.
code
of devices
Item
First device No.
Subcommand *1
ASCII code
or
or
or
or
Number of
devices
Binary code
or
or
or
or