SEW-Eurodrive MOVIPRO Ethernet/IP - Services (Function Codes); Accessing Services

9
Modbus protocol (Modbus/TCP)
Description
Manual – MOVIPRO
®
with EtherNet/IP™ or Modbus/TCP Fieldbus Interface
102
9.1.2 Services (function codes)
For process data exchange, parameter data exchange and device identification, the
device provides the following 4 FC (Function Codes) services.
• FC3 – Read holding registers
Allows for reading one or several registers.
• FC16 – Write multiple registers
Allows for writing one or several registers.
• FC23 – Read/write multiple registers
Allows for a register block to be read an written simultaneously.
• FC43 – Read device identification
Allows for device identification by reading the identity object.
9.1.3 Accessing services
The implemented registers and possible services (function codes) for data exchange
are summarized in the following table:
Offset
hex
Meaning for Access Comment
Reading Writing
0–3 – – – Reserved
4–FF
Process input data
(actual values)
Process output data
(setpoints) FC03, FC16,
FC23
0–8 process data words for
MOVIPRO
®
SDC
0–120 process data words for
MOVIPRO
®
ADC
100–103 – – – Reserved
104–1FF
Process output data
(setpoints)
– FC03
For reading the setpoint values
by a client other than the con-
trolling one
200–2FF
Result non-cyclical
parameter channel
Request non-cyclical
parameter channel
FC03,FC16,
FC23
4words
300–FFFF – – – Reserved
Special case:
219E (8606
dec
)
Fieldbus timeout inter-
val,
read value
Fieldbus timeout inter-
val,
write value
FC03, FC16
Parameter P819: 16-bit value,
timeout interval in ms
16998413/EN – 12/2016