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DOK-RCON02-FV*********-IB08-EN-P
Rexroth Frequency Converter Fv
Pin No.
Terminal sign
1
PE
2
NC
3
PROFIBUS_B
4
RTS
5
GND
6
Vcc
7
NC
8
PROFIBUS_A
9
NC
Requirements for PROFIBUS link
Cable parameters
Impedance
135...165 Ω (f = 3...20 MHz)
Capacity
< 30 pF/m
Resistance
≤ 110 Ω/km
Conductor cross sec‐
≥ 0.34 (22 AWG)
tion
Relationship between communication rate and cables
Baud rate
Maximum length for each cable in [m] (Type A)
9.6...93.75 kbps
187.5 kbps
500 kbps
1.5 Mbps
3...12 Mbps
Terminal name
Terminal of bus cable shield
–
PROFIBUS terminal_B
Request for signal sending
Power-
Power+
–
PROFIBUS terminal_A
–
Tab. 12-22:
Definition of PROFIBUS DB9 Pins
Cable used is shielded twisted pair cable. The shield is able to improve elec‐
tromagnetic compatibility (EMC) ability. Unshielded twisted pair cable may be
used if there is less electromagnetic interference (EMI).
Impedance of the cable should be within 100...200 Ω. Cable capacity (among
conductors) should be < 60 pF/m, and conductor cross section should be ≥
0.22 (24 AWG). Two kinds of cables are used for PROFIBUS with detail defi‐
nitions stated in table below.
Type A
Tab. 12-23:
Type of PROFIBUS-adapter cable
Standard Siemens PROFIBUS cable is (MLFB) 6XV1830-0EH10
(Type A), and connector is 6ES7972-0BA12-0XA0.
Relationship between adapter's communication rate and cable length is de‐
scribed in table below.
1000
1000
400
200
100
Tab. 12-24:
Relationship between communication rate and cable length
Bosch Rexroth AG
Communication Protocols
Function description
Connects with bus cable shield
Reserved
PROFIBUS data cable B
–
–
–
Reserved
PROFIBUS data cable A
Reserved
Type B
100...130 Ω (f > 100 kHz)
< 60 pF/m
≤ 110 Ω/km
≥ 0.22 (24 AWG)
Maximum length for each cable in [m] (Type B)
1000
600
200
200
100
235/259
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