Command And Subcommand - Panasonic FP7 User Manual

MC Protocol Communication Function
 Elements which compose command responses
Number Name
①
Header
②
Subheader
③
Network number
④
PC No.
Destination unit I/O
⑤
number
Destination unit
⑥
number
Request data length or
⑦
response data length
⑧
CPU monitor timer
⑨
Command
⑩
Subcommand
⑪
Request data part
⑫
Completion code
⑬
Response data part
REFERENCE
• For the details of the request data and response data parts, refer to 9.3.3
Format of Request Data Part and Response Data Part.

9.3.2 Command and Subcommand

• FP7 series supports the following commands only.
• Command and subcommand codes are created as 4-digit hex 2-byte codes which show the
types and information of the commands. Subcommands indicate transfer units.
• When performing the master communication from the FP7 CPU unit, the transfer unit and
subcommand vary depending on the type of the memory area specified for the operand of
SEND/RECV instruction.
 Supported commands and codes
Transfer
Function
Bulk read
Bulk write
9-6
Ethernet header, IP header, TCP or UDP header
For the binary communication supported by FP7 series, it is the following
4-byte data. Command: 00h 50h, Response: 00h D0h
The FP7CPU unit supports only "00h".
The FP7CPU unit supports only "FFh".
The FP7CPU unit supports only "03FFh".
The FP7CPU unit supports only "00h".
The number of bytes of the following commands or responses.
The FP7CPU unit does not support it.
Bulk read: "0401h", bulk write: "1401h"
When sending in bits: "0001h", When sending in words: "0000h"
The starting address, device type and the number of points are specified.
In the normal state: "0000h", In the abnormal state: An error code is
returned.
For read commands, the starting address of read device, device type, the
number of points and data are returned.
Code in MC protocol
unit
Command
Bit 0401
Word 0401
Bit 1401
Word 1401
Description
Subcommand
0001
0000
0001
0000