Mitsubishi Electric GOT2000 Series Connection Manual page 200

3.4.5 Formats 5 (Digital Electronics Corporation's memory link method)
■1. Basic format of data communication
This is the same format as the protocol of the Digital Electronics Corporation's memory link method.
For details of the basic format of data communication, refer to the following manual:
➠
This section describes items whose settings differ from the protocols of the Digital Electronics Corporation's memory
link method and dedicated commands for a microcomputer connection of GOT.
Example:Request message for the batch read in word units (R) command in format 5
(Digital Electronics Corporation's memory link method)
■2. Details of data items in message format
(1) Command
Specifies the contents to access from the host to GOT.
The command is converted to a 1-digit ASCII code (Hex) and transmitted.
For details of the commands that can be used, refer to the following.
➠
(2) Address
Specifies the head No. of the device data to be read/written.
The address notated in hexadecimal is converted to a 4-digit Binary code (Hex) and transmitted from the upper digit.
For details of the device range that can be accessed, refer to the following.
➠
(3) Number of points
Specifies the number of device data to be read/written. (Setting range: 1 to 200H)
The address notated in hexadecimal is converted to a 4-digit Binary code (Hex) and transmitted from the upper digit.
(4) Error code
This is the response message at faulty communication appended with error contents.
The address notated in hexadecimal is converted to a 2-digit Binary code (Hex) and transmitted from the upper digit.
For details of error codes generated in format 5 (Digital Electronics Corporation's memory link method), refer to the
following:
➠ ■4.
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3.4 Message Formats
The connection manual of the device manufactured by Digital Electronics Corporation
B
42 00 00 00 00
H H H H H
POINT POINT POINT
Data code during communication
Communication is performed in Binary code.
3.4.2 List of commands
3.3 Device Data Area
Error code list
POINT POINT POINT
When connecting a microcomputer, etc. that uses the protocol of the Digital Electronics
Corporation's memory link method with the GOT
When connecting a microcomputer, etc. that uses the protocol of the Digital Electronics
Corporation's memory link method with the GOT, correct the commands to be used and the
device ranges to match the specifications of the GOT.
Com-
Data length ESC
mand
R
00 00 06 1B 52
H H H H H
Number
Address
of points
00 64 00 02
H H
H H