Woodward easYgen-2000 Series User Manual page 468

Interfaces And Protocols
Modbus Protocol
Visualization
Modbus read Description
addresses
450001 Protocol-ID, always 5100
450002 Pickup speed
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............ .........
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450200 Exhaust Gas Temp.
Table 95: Address range block read
468
All addresses in this document comply with the Mod‐
icon address convention. Some PLCs or PC programs
use different address conventions depending on their
implementation. Then the address must be increased
and the leading 4 may be omitted.
Please refer to your PLC or program manual for more
information. This determines the address sent over the
bus in the Modbus telegram. The Modbus starting
address 450001 of the visualization data may become
bus address 50000 for example.
The visualization over Modbus is provided in a very fast data pro‐
tocol where important system data like alarm states, AC measure‐
ment data, switch states and various other informations may be
polled.
According to the Modbus addressing range, the visualization pro‐
tocol can be reached on addresses starting at 450001. On this
address range it is possible to do block reads from 1 up to 128
Modbus registers at a time.
Ä "Address range block read" Table on page 468 is
only an excerpt of the data protocol. It conforms to the
data protocol 5100 that is also used by CAN bus.
Refer to Ä Chapter 9.2.1.1 "Data Protocol 5100 (Basic
Visualization)" on page 492 for the complete protocol.
The following ModScan32 screenshot shows the configurations
made to read the visualization protocol with a block read of 128
registers.
easYgen-2200/2500 | Genset Control
Multiplier Units
--
1 rpm
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0.01 °C
37535B