Interface Specifications; Serial Communications Protocol; Network Communications; Series 90-30 Backplane Interface - GE 90*-30 PLC Series User Manual

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Interface Specifications

Serial Communications Protocol

Network Communications

Series 90-30 Backplane Interface

A-4
Port
Electrical interface
Baud rate
Data word length
Stop bits
Parity
Transfer handshake
Hand-Held Programmer
L W Transceivers
ON ORKS
Termination
SNVTs
Backplane processor
Direct Memory Access
Host application processor interface
Series 90™-30 PLC LONWORKS® Bus Interface Module User's Manual – June 1997
Firmware download port only
EIA RS-422 compliant
9600 BPS
8 bits
1
none
RTS/CTS
Not supported in firmware. The HHP Present pin is supported
in hardware.
Transformer Isolated Twisted Pair
TP/XF-1250 Twisted Pair Transceiver
TP/XF-78 Twisted Pair Transceiver
TP/FT-10 Free Topology Twisted Pair Transceiver
external
Supports SNVTs 31 bytes or less in length
GE SI-30 ASIC (application specific integrated circuit)
16-bit DMA transfer mode
API for Series 90-30 Smart Modules
GFK-1322A