Toshiba nv Series - Transmission Specification; Transmission Specifications

Unified Controller nv series type1 light PROFIBUS-DP Module PF611A / PF612A User’s Manual
41
A.2 Transmission Specifications
Table A-2 Transmission Specifications
Item
Description
Transmission path
configuration
Bus
Number of
transmission stations
122 (maximum)
(32 in each segment, expandable with repeater (up to 3))
Transmission cable
RS-485 Shielded twisted pair cable
(PROFIBUS standard compliant cable)
Transmission speed
9.6 K to 12 Mbps
Transmission code
Manchester
Modulation method
Baseband
Access method
Token passing
Physical layer
RS-485, with insulation by photo coupler
Communication service
Cyclic transmission
Be sure to use a twisted pair cable with a PROFIBUS standard compliant shield for the
transmission cable. Short the cable shield to FG.
Figure A-1 Shielded twisted pair cable
Shielded twisted pair cable
FG