Fins Communications From Computers; Frame Format; Fins Command And Response Formats - Omron SYSMAC C200HW-PCU01 Operation Manual

FINS Communications From Computers

9-6

FINS Communications From Computers

9-6-1 Frame Format

9-6-2

FINS Command and Response Formats

FINS Commands
FINS Responses
4. Executes the CMCR instruction.
5. CMCR instruction execution is completed when bit 12801 is turned ON
while the Instruction Enabled Flag (bit 25204) is ON.
6. Turns ON if an error occurs during communications execution.
Commands and responses sent from host computers must be in the formats
described in this subsection and must provide the proper FINS header informa-
tion. These formats can also be used to decode commands and responses
received from other network nodes.
With the FINS communications service, datagrams in the Ethernet frame format
shown below are sent and received.
Ethernet header
When a FINS command from a computer is used, the destination's IP address
and UDP port number must be set.
This subsection explains the data formats for FINS commands and responses.
Commands consist of a FINS header, command code, and text. The length and
content of the text depend on the particular command.
FINS header
A response block includes a response code (a 2-byte code in binary) added to
the command format. In the FINS header information, DNA DA1, and DA2 are
interchanged with SNA, SA1, and SA2 (in comparison to the command header)
and SID is the same as that in the command header.
FINS header
An error response will be returned if the IP-FINS node address conversion table
is not correctly set.
IP header UDP header
FINS header
Command code Text (max. 1,998 bytes)
Command Response Text (max. 1,998 bytes)
code code
Section 9-6
FINS message
Command code
Text
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