Siemens S7-300 - Marginal Conditions for Wiring Interior Bus Cables

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S7-300 Automation System, Hardware and Installation: CPU 312IFM - 318-2 DP
5-40 A5E00203919-01
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When wiring PROFIBUS cables, you must not
• twist,
• stretch
• or compress them.
When wiring indoor bus cables, also maintain the following marginal conditions
(d
A
= outer cable diameter):
Table 5-19 Marginal conditions for wiring interior bus cables
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Bending radius (one-off) ≥ 80 mm (10 x d
A
)
Bending radius (multiple times) ≥ 160 mm (20 x d
A
)
permitted temperature range during installation -5 °C to +50 °C
Shelf and stationary operating temperature range -30 °C to +65 °C
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If you want to use fiber optic cable cables for PROFIBUS, you can find further
information on this topic in the SIMATIC NET, PROFIBUS Networks Manual.
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Table 5-20 Bus connector
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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
RS 485 bus connector up to 12 Mbps
with 35° cable exit (not CPU 31xC, 312, 314 (6ES7314-
1AF10-0AB0) or 315-2 DP (6ES7315-2AG10-0AB0))
without PG interface
with PG interface
6ES7 972-0BA40-0XA0
6ES7 972-0BB40-0XA0