Data Pro
P/N 10029355 Rev AE
Operation Manual
Page 87 of 92
20.0 Appendix 11: Modbus Poll Example
The Modbus Poll setup window shows that the register number entered in the
‘Address’
(NOTE: For
the ‘Address’ use the Unit_ID of the device you want to read) box is dependent upon the selection of
‘PLC Addresses (Base 1)’
. The below example shows that the user enters address
‘1000’
to view the
content of register
‘41001’
when
‘PLC Address (Base 1)’
is unchecked. However, the user enters the
address
‘1001’
to view the content of register
‘41001’
when
‘PLC Address (Base 1)’
is checked
(Figure 55). As a result, the gauge serial number appeared in different registers (Figure 56) .
Figure 55
– Modbus Poll Address Configuration Window