Jetter JC-120MC, User Manual

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260 Jetter AG
10 Programming
Controller evaluates errors reported by a remote network node
The controller has got read access to the contents of the following status
registers of all network nodes at the Jetter Ethernet system bus.
The contents are accessed via registers 39nnn0 through 39nnn5.
(GNN: nnn = 001 ... 199).
Registers JX3-BN-ETH,
JX3-COM-EIPA
Controller
Error register 200008 39nnn0
Enhanced error register 1 200009 39nnn1
Enhanced error register 2 200010 39nnn2
JetSync status 240010 39nnn3
Subscriber status 250000 39nnn4
Subscription ID 250002 39nnn5
The operating system writes the ID of the subscription for which last an error
has been reported to register 250002.
If the value of register 39nnn0 is unequal zero, an error has occurred. A
network node has reported this error to the controller via its status registers.
In consequence, the operating system of the controller reacts by taking the
following steps:
Step Description
1
The operating system sets bit 10 in R 200009.
2 If ... ... or ... ... then ...
... Bit x = 1 of
R 200009,
Bit x = 1 of
R 200010,
... the operating system sets bit
7 of R 200008.
3 The operating system enters the GNN of the network node having last
reported an error to the controller into R 394001.
4 The operating system enters the IP address of the network node having
last reported an error to the controller into R 394002.
5
The operating system enters the port number of the network node having
last reported an error to the controller into R 394003.
By means of NetCopy commands, you can precisely locate the error and fix
the root cause. This works, because GNN, IP address and port number of the
other network node are known.
Make sure the contents of registers 39nnn0 through 39nnn5 are read by the
application program. Further registers having got a value unequal zero
indicate that further network nodes have reported an error. Make sure you
also clear these errors.
Access to the status
registers
Locating faults
Fixing the root cause