Host Link Communication - Omron PROFIBUS DP GATEWAY Operation Manual

Host Link Communication

3-5

Host Link Communication

Device type
- Empty slot (No device)
R88A-MCW151-E "MCW151 Host Link 5 IW/5 OW"
"MCW151 Host Link 10 IW /10 OW"
"MCW151 Host Link 15 IW / 15 OW"
50
Device End code
address
1 byte
The table below lists the message parameters.
Message
parameters
Device address
End code
Command type
Parameter Number /
Command Code
Data
In the following table the fixed communication blocks for Host Link communi-
cation are listed.
Host Link
Module name
The required data on VR-memory address can be programmed in the R88A-
MCW151-E. For more detailed information refer to the R88A-MCW151-E
Operation Manual.
The status of the PROFIBUS communication can be checked by the R88A-
MCW151-E through the R88A-MCW151-E status word (see figure below).
This word is sent by the PRT1-SCU11 to the R88A-MCW151-E.In case
PROFIBUS communication fails, the first bit of the status word will be set to
Command Parameter Number/
type
1 byte 1 byte
Description
The address number of the target device.
Indicates failure or success of the command transmission.
If the End code is not equal to 0, the data part must be con-
sidered invalid.
A command type code
1 = Read command
2 = Write command
3 = Special command
4 ~ FF = Invalid command
This is the same as sent to the device via the output data.
Refer to the E5AK / E5EK Operation Manual.
In case the Command type is set to 1 or 2, use the Parameter
number to specify the parameter to be read or written.
In case the Command type is set to 3, use the Command
code to define the Special Operation.
Data read from or written to the E5AK / E5EK Controller.
Output words
- -
VR(5) (Status word) VR(0) - VR(4)
VR(6) - VR(10)
VR(10) (Status word) VR(0) - VR(9)
VR(11) - VR(20)
VR(15) (Status word) VR(0) - VR(14)
VR(16) - VR(30)
Section 3-5
Data
Command code
1 byte 2 byte
Input words Total
output
words
0
5
10
15
Total
input
words
0
5
10
15