Diagnostics
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9.9.1 General Statistics
These counters relate to the overall operation of the scanner on Profibus.
The errLanOffline counter, the high byte of register 4100, increments when
the LAN encountered errors and went offline.
The diagConf counter, register 4101, counts total confirmations, that is, good
replies to messages that this station has generated.
The diagInd counter, register 4102, counts total indications, that is,
unsolicited messages to this station.
The errNotOk counter, register 4103, counts the Total Not OK confirmations
and indications, that is, total bad replies and bad unsolicited messages
(indications).
The scanner stores the instantaneous token hold time, in Tbits, in
diagTokHldTime, registers 4104 and 4105. This time is the time available to
send messages when the scanner gets the token.
The scanner stores the minimum token hold time, in Tbits, in
diagMinTokHldTime, registers 4106 and 4107. This time is the minimum
value of diagTokHldTime. If this number is 0, you may need to increase the
target token rotation time or delta TTR in COM PROFIBUS.
9.9.2 DP Master Statistics
These counters relate to the operation of the scanner as a DP master.
The diagMasterUpdate counter, register 4108, is the number of Master I/O
update cycles completed.
The errMasErr counter, the low byte of register 4109, is the number of DP
master to DP slave communication errors. It increments any time the message
failed because of retries exceeded, etc.
The errMasReConfig counter, the high byte of register 4109, is the number of
times a DP slave went offline and had to be reconfigured, that is, the scanner
was actively updating a node and got a faulty message. It increments after the
scanner has retried the message the number of times specified in
pfbMsgRetryLimit (set by COM PROFIBUS).
The diagMasScanTime register, registers 4110 and 4111, contains the
instantaneous master scan time in microseconds, that is, the time to scan all
the slaves assigned to this master. The scanner adds 100 microseconds to the
measured time to allow for overhead in starting the timer, etc.
Summary of Contents for SST-PFB-SLC
Page 7: ...Contents vii Technical Data 105 Index 107 A...
Page 8: ...SST PFB SLC User s Guide viii...
Page 14: ...SST PFB SLC User s Guide 6...
Page 20: ...SST PFB SLC User s Guide 12...
Page 34: ...SST PFB SLC User s Guide 26...
Page 53: ...45 6 DP Master Application Examples...
Page 56: ...SST PFB SLC User s Guide 48 Sample Program...
Page 57: ...DP Master Application Examples 49 Sample continued...
Page 66: ...Using the Scanner Module as a DP Slave 58...
Page 67: ...59 8 Using FDL...
Page 75: ...Using FDL 67 Sample Program...
Page 76: ...SST PFB SLC User s Guide 68 Sample Continued...
Page 80: ...SST PFB SLC User s Guide 72 Sample Program...
Page 81: ...SST PFB SLC User s Guide 73 Sample Continued...
Page 85: ...SST PFB SLC User s Guide 77...
Page 86: ...SST PFB SLC User s Guide 78...
Page 87: ...79 9 Diagnostics This chapter describes system diagnostics...
Page 105: ...97 11 Network Parameter Defaults This chapter describes network defaults...