Measurement Computing PointScan 300 Series rev.1.0 - Manual (Page 16)

3-2 Power and PT-Bus Wiring 9-12-01 PointScan/300 User’s Manual
PT-Bus Wiring Guidelines
PT-Bus wiring connects the PointScan/300 Series I/O modules and expanders to the gateway. Follow the
guidelines for reliable performance.
PT-Bus Capability
Max. modules controlled by one gateway 128
Max. modules connected directly to gateway 20 (any mix)
Required cable type Any with 2 individually
shielded pairs, 22AWG min.
Recommended cables Alpha 2466C, Belden 8723,
Carol C1352
Max. cabling off each gateway or expander 50 ft. (16M)
Connect up to 20 I/O modules directly to the
gateway with a maximum total cabling of 50 feet
(16m). PT-Bus connections may form star configurations
without restrictions.
PT-Bus wiring may be extended into additional cabinets as long as the total length of wire
connected to the gateway or expander stays within the 50 foot limit (16m).
Use the supplied PT-Bus jumpers between adjacent PointScan components. Otherwise, use the
recommended cable.