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7.10 SERIAL COMMUNICATIONS PORTS, CONTINUED
7.10.7
Errorlog Port
Port(07) is defined as a serial errorlog port. The MAXPRO-Net uses a disk-based file
called ERRORLOG.MAX to record all errors together with vital system status information.
By defining a serial communications port of type ERL, whenever the video system writes
to the disk based errorlog file, it will also echo the same message out of the defined ERL
port.
This is sometimes necessary where a separate computer is being used to gather this
information.
7.10.8
Test Port
Port(08) is defined as a TEST communications port. All keyboard, subrack, high-level
and network communications data messages will be echoed out of this port. Using the
program PATCH232.EXE connected to a defined (TST) test port, it is possible to LOG all
communications messages concurrently with the one laptop.
This is important in large systems that are using networking, to help identify
configuration problems during commissioning. Any type of data can be written into the
(TST) test port allowing response simulations to be performed.
7.10.9 VB/IO Pre Titler
Port(09) is defined as a VB/IO Pre Titler port. MAXPRO-Net is connected to RS422
Convertor through this port. RS422, in turn, is connected to the Video blox hardware.
Hence, MAXPRO-Net sends the switching commands to Video blox hardware through
this port.
7.10.10 VB-PTZ
Port(10) is defined as a VB-PTZ port. MAXPRO-Net is connected to PTZ PIT through
this port. So MAXPRO-Net sends the control commands to the Camera through this port
to PIT. All the PTZ Commands are sent to the Camera through this Port. PTZ PIT is a
controller device.
Rev. B
WARNING: Only ONE errorlog (ERL) port can be
defined in the communications port table.
WARNING: Only ONE test (TST) port can be defined in
the communications port table. Remember to remove
the (TST) port once the system is up and running.
7-36
HMXMC001013
31-Mar-06
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