Omron SYSMAC CS Series Operation Manual page 219

PROFIBUS DP-V1 Services
6-8-2 PROFIBUS Services from PLC CPU
CIP Messaging
PROFIBUS MSAC1
Example
198
As an example, the figure below shows the DTM of the GRT1-PRT PROFI-
BUS Communication for SmartSlice I/O Units (see Operation Manual W04E-
EN-@). The DTM is used to configure and monitor the GRT1-Series Smart-
Slice I/O Units.
The CS1/CJ1W-PRM21 PROFIBUS Master Units support sending Explicit
DeviceNet (CIP) messages to their slaves (as of Unit version 3.0). Like the
DeviceNet master this is done by using the EXPLICIT MESSAGE SEND
(FINS 2801).
Please refer to section 5-2-7 EXPLICIT MESSAGE SEND (2801) for more
details on this command.
As of Unit version 2.0, the CS1/CJ1W-PRM21 PROFIBUS Master units pro-
vide a means to initiate PROFIBUS DP-V1 services from the PLC CPU.
These services allow for reading and writing (parameter) data from and to
PROFIBUS DP-V1 slave devices. This data exchange is performed acycli-
cally, i.e. only once, in between the cyclic I/O data exchange messages.
The services are initiated using the PROFIBUS MESSAGE SEND FINS com-
mand (see section 5-2-8 PROFIBUS MESSAGE SEND (2809)). The example
below shows a ladder program initiating a PROFIBUS DP-V1 MSAC1_Read
service to retrieve data from a slave device.
In the example below, a PROFIBUS DP-V1 MSAC1_Read service is send to
PROFIBUS DP-V1 slave device at address 2, requesting up to 10 data bytes
Section 6-8