Bosch Rexroth EFC 3600, Operating Instructions Manual, Page: 183 / 238

● 9=EEPROM read/write error
● B=Function code 3, read range exceeds 16
● (*) includes situations listed below:
– Write operations on [b0.06] parameter replication, [b0.30] running
monitoring display, [b0.31] stop monitoring display and [S2.15] physi‐
cal data calculation, are prohibited.
– Write operations on [b0.00] user password, [b0.01] manufacture
password and [b0.05] parameter initialization only support Function
6.
– Multi-function digital input terminals ([E0.01] ~ [E0.05]) writing opera‐
tion do not permit repeated nonzero value.
13.2.4 Communication Mapping Register Address Distribution
The communication mapping registers of ModBus are in three types: frequency con‐
verter parameter registers, communication control registers and communication state
feedback registers.
● Frequency converter parameter registers
Frequency converter parameter registers correspond to the function codes one-to-one.
Reading and writing of related function codes can be achieved through reading and
writing of the contents in frequency converter parameter registers via ModBus commu‐
nication. The characteristics and scope of reading and writing function codes are in
compliance with the frequency converter function code description. The address of a
frequency converter parameter register is composed of a high byte representing the
function code group and a low byte representing the index in the group. The groups are
mapped as follows:
Address
high byte
0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09
0x0A 0x0B
0x0C 0x0D
Group b0 b1 S0 Reserved S2 S3 E0 E1 E2 E3 E4 H0 P0
(*)
d0
(**)
Fig.13-22: Frequency converter parameter registers
（*）
: The manufacturer parameter groups (P-group) can always be read
(independent of the manufacturer password setting). It depends on the
password setting if the parameter can be modified over communication.
（**） : Parameters of the monitoring group (d0-group) are always write-pro‐
tected.
Examples:
To read out the module temperature ([d0.16]) of EFC 3600 frequency converter, use
register address 0x0D10 (0x0D=d0-group, index 0x10=16).
DOK-RCON03-EFC-3600***-IT01-EN-P
Rexroth Frequency Converter EFC 3600 Bosch Rexroth AG
Communication Protocols
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