Specifications

2–5 Selecting Your Hardware Components
Publication 1747-6.2
Processor Communication Options
The SLC 500 processors support different types of communication
options. The following sections describe the available physical
connections and protocol options used by the SLC 500 processors.
Physical Connection Options
Ethernet (10Base-T) channel offers:
• 10 Mbps communication rate
• ISO/IEC 8802-3STD 802.3 (RJ45) connector for 10Base-T media
• TCP/IP communication protocol
• built-in isolation
Data Highway Plus (DH+) channel offers:
• communication rates of 57.6K, 115.2K, and 230.4K baud
• maximum network length of 3,048 m (10,000 ft) at 57.6K baud
• Belden 9463 (blue hose) cable connection between nodes
(daisy chain connection)
• built-in isolation
DH-485 channel offers:
• configurable communication rates up to 19.2K baud
• electrical isolation via the 1747-AIC or 1761-NET-AIC
• maximum network length of 1219m (4,000 ft)
• RS-485 electrical specifications
• Belden 9842 or Belden 3106A cable connection between nodes
(daisy chain connection)
RS-232 channel offers:
• communication rates up to 19.2K baud (38.4K baud SLC 5/05)
• maximum distance between devices is 15.24 m (50 ft)
• RS-232C (EIA-232) electrical specifications
• modem support
• built-in isolation
The table below summarizes the processor channel connections.
Processor
Physical Communication Channel
Processor
DH-485 RS-232 DH+ Ethernet
SLC 5/01 and SLC 5/02 DH-485 protocol –– –– ––
SLC 5/03
Channel 0 ––
DH-485
➀
, DF1 Full-Duplex, DF1 Half-Duplex
Master/Slave, and ASCII protocols
–– ––
Channel 1 DH-485 protocol –– –– ––
SLC 5/04
Channel 0 ––
DH-485
➀
, DF1 Full-Duplex, DF1 Half-Duplex
Master/Slave, and ASCII protocols
–– ––
4
Channel 1 –– ––
DH+ protocol
––
SLC 5/05
Channel 0 ––
DH-485
➀
, DF1 Full-Duplex, DF1 Half-Duplex
Master/Slave, and ASCII protocols
–– ––
Channel 1 –– –– –– Ethernet TCP/IP protocol
➀
A 1761-NET -AIC (or 1747-AIC) is required when connecting to a DH-485 network.