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Page 158 of 277
Table 41: Serial Communication Ports
Port
Standard Use
Notes
Com1
Reserved
Cannot be assigned.
Com2
RS-232/RS-485
SCADA
(Master Port)
By default, Com2 is RS-232. Can
be used as RS-485 by installing
P/N 800638, Expansion Port
Module RS-485.
Can be reassigned for use with
another
vendor’s downhole tool if
not used for SCADA.
Com3
RS-485
Apollo I/O board and Osiris
Downhole Tool
(Slave Port)
Can be reassigned for use with
another
vendor’s downhole tool if
the Apollo I/O and Osiris are not
used in the system.
Com4
RS-485
Drive Communications
(Slave Port)
Dedicated for drive
communications. Do not
reassign.
Com5
RS-232
Requires USB to RS-232 adapter,
S/N 197349. Can be used for
SCADA or communications with
another
vendor’s downhole tool.
Com6
Reserved
Please do not assign.
Serial ports are configured as either Master ports or Slave ports based on their function. Slave ports are
used to poll slave devices, like the Apollo I/O board and the Osiris downhole tool. The configuration screen
for a port configured as a
Slave port
Figure 129: Port Configured-Screen 1, page 158
. This
is the default configuration for Com3.
Summary of Contents for Apollo 3
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