Hardware manual

5901 High Speed Dialup Modem Hardware Manual
October 19, 2007
15
Note: The 9VDC adapter connection cannot be used in Hazardous Locations.
4.4.3 RS-232 Connection
The 5901 may be powered from pin 9 of the RS-232 connector, P4. There are a number of
restrictions with respect to the 5VDC tolerance and fuse considerations. Contact Control
Microsystems Technical Support for further information when using this method of powering the
5901 modem.
4.5 Configuration Jumpers
The 5901 modem uses three configuration jumpers for setting modem operation parameters. These
jumpers are described in the table below. Refer to Figure1: 5901 Module Layout above for the
location of each jumper.
Jumper
Description
Setting
J1
5V from P4
pin 9
When installed the 5901 uses 5VDC power from
serial connection P4 pin 9. When powering the
SCADAPack using this method, ensure jumper J2 is
removed and jumper J4 is installed.
When removed the 5901 is not powered from the
serial connection. This is the normal position for
5901 and 5901SA.
J2
Module
Reset
When installed the 5901 is reset by the I/O Reset
signal from the system I/O Bus. This is the normal
position for the 5901 when powered from the I/O
bus, or from a SCADAPack’s RS-232 port.
When removed the 5901 is reset internally. This is
the normal position for the 5901SA. Note that the
5901 is considered an SA only when it is powered
using an external 115V AC to 9V DC transformer.
J4
DTR
When installed the DTR signal does not affect 5901
reset. This is the normal position for the 5901SA.
Note that the 5901 is considered an SA only when it
is powered using an external 115V AC to 9V DC
transformer.
When removed and the DTR signal is de-asserted
the 5901 will reset. This is the normal position for
the 5901, when powered from the I/O bus, or from a
SCADAPack’s RS-232 port.
J5
Chassis
Ground
When installed the telephone line transient
protection is connected to chassis ground. This is
the normal position for the 5901, when powered
from the I/O bus, or from a SCADAPack’s RS-232
port.
When removed the telephone line transient
protection is not connected to chassis ground. This
is the normal operation for the 5901SA. This is the
normal position for the 5901SA. Note that the 5901
is considered an SA only when it is powered using
an external 115V AC to 9V DC transformer.