Siemens SIMATIC S7-300 Module data Hardware And Installation Manual

Configuring
S7-300 Programmable Controller Hardware and Installation
4-36 A5E00105492-01
RS485 bus connector
Table 4-18 Bus connectors
Type Order No.
RS485 bus connector, up to 12 Mbps,
with 90° cable exit,
without PG interface,
with PG interface
6ES7 972-0BA11-0XA0
6ES7 972-0BB11-0XA0
Fast Connect RS485 bus connector, up to 12 Mbps,
with 90° cable exit, with insulation displacement technology
, without PG interface,
with PG interface
6ES7 972-0BA50-0XA0
6ES7 972-0BB50-0XA0
RS485 bus connector, up to 12 Mbps,
with 35° cable exit (not for CPU 31xC),
without PG interface,
with PG interface
6ES7 972-0BA40-0XA0
6ES7 972-0BB40-0XA0
Application
You require these bus connectors to connect the PROFIBUS cable the an MPI or
PROFIBUS-DP interface
You do not require a bus connector for:
• DP slaves with degree of protection IP 65 (e.g. ET 200C)
• RS485 Repeater.
RS485 Repeater
Table 4-19 RS485 Repeater
Type Order No.
RS485 Repeater 6ES7 972-0AA00-0XA0
Purpose
An RS485 repeater amplifies data signals on bus lines and interconnects bus
segments.
You require this RS485 Repeater in the following situations:
• for operation with more than 32 network nodes
• when interconnecting a grounded and an ungrounded segment
• when exceeding the maximum line length in a segmentThe maximum cable
lengths for RS485 Repeaters ...
... is found in the Chapter Cable lengths.

Siemens SIMATIC S7-300 Module data Specifications

General

Series	S7-300
Manufacturer	Siemens
Protection Class	IP20
System	SIMATIC S7-300
Digital Inputs	Varies by module
Digital Outputs	Varies by module
Analog Inputs	Varies by module
Analog Outputs	Varies by module
Central Processing Unit	Varies by CPU model
Supply Voltage	24V DC or 120/230V AC
CPU Type	Varies (e.g., CPU 312, CPU 315, etc.)
Memory	Varies by CPU model
Communication Interfaces	MPI, PROFIBUS
Programming Languages	LAD, FBD, STL, SCL, GRAPH
Operating Temperature	0°C to 60°C
Storage Temperature	-40°C to 70°C
Relative Humidity	10% to 95% (non-condensing)