HP 24SII User Manual
Page 119
A.6 M24SII-V07 MODULE: EIA-422/EIA-232
PROTOCOL SELECTION AND EXTERNAL
POWER
You may configure individual ports on the M24SII-V07 module to
communicate with either EIA-422 (default) or EIA-232 protocol.
Protocol selection is accomplished via jumper setting. You may also
enable external power for individual ports to supply power to the Tran-
x SP-01 or SP-02 via jumper setting. If you need to reconfigure any of
the ports on this module type, please use the following instructions.
1.
IMPORTANT: If the M24SII-V07 module is installed in the
Model 24SII chassis, remove power from the Model 24SII by
positioning the on/off switch to the OFF position and
unplugging the power cord. Remove the module by
unscrewing the two straight slot screws securing it to the back
panel and pulling the module out.
2.
Refer to
Appendix D.8
and locate the four nine-position jumper
locations for protocol selection and the four three-position
jumper locations for external power. The jumper locations are
marked on the solder side of the connector board for protocol
selection and external power respectively as
JP1
and
JP5
for
Port 1,
JP2
and
JP6
for Port 2,
JP3
and
JP7
for Port 3, and
JP4
and
JP8
for Port 4.
3.
Each port is configurable for EIA-422 or EIA-232 protocol by
installing a six-positon jumper to either the
422
or
232
position
as marked on the connector board. The center row of holes for
each port will be occupied by three of the pins on the jumper
and the row of holes for either EIA-422 or EIA-232 will be
occupied by the other three pins of this jumper.
4.
External power is enabled for each port by installing a two-
position jumper to the
+12
position (as marked on the
connector board) and the center position of the jumper
location.