43
Compoway-F Communication
Section 3-3
An overview of all the Command Codes, Channel Numbers and Error Codes
is given in the table below.
Handshaking
In order to prevent an overflow of commands being sent to one or more
devices, the user must implement a simple handshaking mechanism in the
PROFIBUS DP Master unit.
• When no command is to be sent to a device, set the Special Operation
Word in the PROFIBUS DP Master to 0. The PRT1-SCU11 will respond
by setting the Operation Execute word to 0.
• When a command must be sent to a device, set the Command Code and
the Channel Number. For another Special Operation command to be
sent, the user must first wait for the Operation Execute word to change to
a non-zero value, indicating the completion of the first Special operation
command.
15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
Command Code
Channel Number
Error
Operation Execute Word
Bit group
name
Binary
Value
Value description
Command
code
0000
Clear command
0001
Run
0010
Stop
0011
AT Cancel
0100
AT Execute
0101
Auto
0110
Manual
0111-1111
Reserved
Channel
numbers
000
Channel 1
001
Channel 2
010
Channel 3
011
Channel 4
100-110
Not supported
111
All channels
Error code,
one bit
0
No error
1
Error
• Not supported command number
• Not supported channel number
• Command execution failed
• Communication with Temperature Controller fails
Summary of Contents for PROFIBUS DP GATEWAY
Page 1: ...OPERATION MANUAL PROFIBUS DP Gateway to Host Link Compoway F PRT1 SCU11 Cat No W01E EN 02 ...
Page 2: ...PRT1 SCU11 PROFIBUS DP Gateway Operation Manual Revised September 19 2005 ...
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