ProSoft Technology PS69-DPS, Руководство пользователя

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Reference PS69-DPS ♦ CompactLogix or MicroLogix Platform
Profibus DP Slave Communication Module
ProSoft Technology, Inc. Page 61 of 94
January 12, 2009
Module Output Array
Below is a summary of the register layout of the output area of the PROFIBUS
Slave module. The offset values are defined as byte
Offset Register Type Name
0 Device Command Register Command Bits
1 Device Command Register Reserved
2 Device Command Register Reserved
3 Device Command Register ExtStaSelect
4-248 PROFIBUS Input Area PBInputData
Module Input Array
Device Status Registers
The PS69-DPS module uses the first 4 bytes of the CPUs input area to transfer
Device Status Register information. The Device State Register contains
information indicating the modules communication status and command status.
The PLCs input area mapping of this information is shown below.
Byte Offset Structure Member Data Type Description
0 MSB SINT Module Status Bits
1 Reserved SINT Reserved
2 Reserved SINT Reserved
3 Reserved SINT Reserved
MSB := Module Status Bits
Bit Offset Structure Member Data Type Description
0 Reserved BOOL Reserved
1 Reserved BOOL Reserved
2 Reserved BOOL Reserved
3 Reserved BOOL Reserved
4 Reserved BOOL Reserved
5 COM BOOL Communication
6 RUN BOOL Run
7 RDY BOOL Ready
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RDY (Ready)
When this bit is set, the module is operational. The RDY-Bit should always be set
by the module. If this bit is not set a system error has occurred and the
communication between controller and module is not possible.
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RUN (Run)
When the RUN-bit is set, the module is ready for communication. Otherwise an
initialization error or incorrect Parameterization occurs.
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COM (Communication)
When this bit is set, the communication is started and the module is engaged in
cyclic data exchange with the Master.
These three bits are the most important bits that the controller application can
use to monitor the communication and operating status of the module