MVI46-PDPS
♦
SLC Platform
Diagnostics and Troubleshooting
Profibus DP Slave Communication Module
Page 42 of 72
ProSoft Technology, Inc.
April 30, 2008
Monitoring times between 2 ms and 650 s - independent of the baud rate - can
be implemented with the permissible watchdog factors. If the monitoring time
runs out, the SPC3 goes again to 'Baud_Control,' and the SPC3 generates the
'WD_DP_Control_Timeout-Interrupt'. In addition, the DP_State machine is reset,
that is, generates the reset states of the buffer management.
If another master accepts SPC3, then there is either a switch to 'Baud_Control"
(WD_On = 0), or there is a delay in 'DP_Control' (WD_On = 1), depending on the
enabled response time monitoring (WD_On = 0).
Status Register [1]
SPC3 ASIC slave status information provided to the master.
Baud rate:
The baud rates SPC3 found
Bits
0 to 3
0000 = 12 MBaud
0001 = 6 MBaud
0010 = 3 MBaud
0011 = 1.5 MBaud
0100 = 500 kBaud
0101 = 187.5 kBaud
0110 = 93.75 kBaud
0111 = 45.45 kBaud
1000 = 19.2 kBaud
1001 = 9.6 kBaud
Rest = Not possible
SPC3-Release:
Release no. for SPC3
Bits
4 to 7
0000 = Release 0
Rest = Not possible
Diagnostic State
0 = Normal Operation or not in data exchange with Status Register [0] Bit
0x20 set.
1 = Not in data exchange state with the Status Register [0] bit 0x20 not set or
normal operation with the Status Register [0] bit 0x20 not set.
3 = Not in a defined state or in module state 1, 2 or 3.
4 = Normal operation with Status Register [0] bit 0x20 set
PROFIBUS Input Counter
Input counter is incremented each time the input data is updated.
PROFIBUS Output Counter
Output counter is incremented each time the output data is updated.
Last Global Command
The value of the last global command code received from the master.