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4 Modbus TCP Register Map
The following chapter shows how to generally access data of the FBP-devices connected to port one to port four
of the MTQ22-FBP.
Modbus TCP counts registers beginning with one. But on the bus registers start counting
from zero. The addresses in this manual describe the addresses that are transmitted on the
network. Depending on your client application it might be necessary to increment all
addresses by one.
The I/O-data as well as diagnostic and configuration data of the connected PSE devices can be accessed applying
the supported Modbus function codes. The supported functions can be found in respective sub section.
4.1 Digital Input Telegram
To read the digital input telegram, use Modbus function code 1 Read Coil Status or 2 Read
Discrete Inputs.
Address for data access to device connected to port
0 = Motor running
1 = Motor stopped
0 = Motor stopped
1 = Motor running
0 = Local control
1 = Modbus master
control
0 = No active fault
1 = One or more active
faults
0 = No trip on DI_FBP
adaptor
1= Trip on DI_FBP
adaptor
0 = Remote control
1 = Local control
Hardwire DI Start input
signal state
0 = DI Start signal
inactive
1 = DI Start signal
active
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