REXROTH IndraDrive Fc FCS01, Руководство по эксплуатации

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15-42
Control Communication - Field Busses and Protocols Rexroth IndraDrive FCS01.1
DOK-INDRV*--FCS01*****-IB01_EN-P
USIP Bus Description
Bus structure
Elements Description / data
Bus elements Topology Linear topology without stubs;
serial bus coupling between one master and several slaves;
Nodes max. 32, among them 1 master
Segments
Repeater Required for 33 nodes or more to connect
segments.Recommendation: Do not connect more than 3
repeaters in series.
Interface EIA RS 485 for multipoint-capable couplings, or
EIA RS 232 for point-to-point coupling
Bus terminator
At both ends with 120
Ω Ω Ω Ω
resistors
between RS485 + and RS485 -
Transmission
physics Cable specification Line type A acc. To EN 50 170
Bus physics identical to that of PROFIBUS (DIN 19245 part 1)
Cable design Twisted two-wire line, single-shielded as a minimum
(also see specification for RS 485)
Recommended cable type Surge impedance: 135 ... 165
Ω
Capacitance per unit length < 120 pF / m
Loop resistance
≤ ≤ ≤ ≤
40
Ω
/ km
Insulation resistance
≥ ≥ ≥ ≥
200 M
Ω
/ km
Strand diameter 0.64 mm
Strand cross-section > 2 * 0.25 mm²
Multi-wire single litz wires
≥ ≥ ≥ ≥
16
× ≤ × ≤ × ≤ × ≤
0.2 mm
Stranding
≥
≥ ≥
≥
20 stranding twists / m
Total diameter
≥
≥ ≥
≥
5 mm
Load capability
≥ ≥ ≥ ≥
5 A
Shielding minimum requirement single-shield;
Braided shield, tinned copper wire,
∅ ≥ ∅ ≥ ∅ ≥ ∅ ≥
1.1 mm
2
, 85 % optical cover;
placed on both sides;
Wiring arrangement,
distances, shielding Inside and outside of control cabinets at least 20 cm distance
to other lines with voltages > 60V;
Transmission technology semi-duplex, i.e. transmission and receipt alternate and must
be controlled by the software.
Fig. 15-57: Bus structure
Note: With point-to-point connection, a sub-quantity of EIA RS-232
(CCITT V.24), TTY (20mA current loop) or optical fiber can be
used as physical interface.