Fins Commands And Responses; Fins Message Service Communications - Omron SYSMAC CS Series Operation Manual

FINS Commands and Responses

5-1

FINS Commands and Responses

5-1-1

FINS Message Service Communications

FINS
126
FINS (Factory Intelligent Network Services) commands are message service
communications commands developed by OMRON for Factory Automation
control devices. They do not depend on a particular transmission path, and
can be used for reading from and writing to PLC memory or the Unit's mem-
ory, sending or receiving acyclic messages over a network, or for controlling
various operations.
The FINS communications can be issued from a CPU Unit, Special I/O Unit,
or host computer, and they can also be sent to any of these. The specific com-
mands that can be sent depend on the destination.
When the source of the commands is a PLC CPU Unit, the FINS commands
are sent by means of CMND(490). For details on FINS commands, refer to
the Communications Commands Reference Manual (W342)
Note The C200HW-PRM21 does not support FINS commands.
The CS1/CJ1W-PRM21 PROFIBUS Master Units support three types of FINS
messages:
1. FINS commands targeted at the Unit itself, with the purpose of sending or
retrieving data or invoking control actions.
2. FINS commands facilitating data transfer using PROFIBUS services, tar-
geted at a specific slave device connected to the same PROFIBUS net-
work as the PROFIBUS Master Unit.
3. FINS commands containing a CIP-defined explicit message, targeted at a
specific OMRON slave device connected to the same PROFIBUS network
as the PROFIBUS Master Unit.
Note FINS commands of the second type are supported as of Unit version 2.0. The
FINS commands of the third type are supported as of Unit version 3.0.
The figure below depicts the FINS command structure for the CS1/CJ1W-
PRM21 PROFIBUS Master units.
CPU Unit
CMD (490)
FINS message
Instruction
CMD (490)
Instruction FINS PROFIBUS message
(2809 Hex)
CMD (490)
Instruction FINS
(2801 Hex)
FINS messages are defined through their command and response codes.
PROFIBUS Master Unit
FINS
message
function
PROFIBUS
message
function
Explicit
Explicit message message
function
PROFIBUS network
Section 5-1
PROFIBUS message
DP-V1 Explicit message