User`s manual

Maxiflex T2 CPU User Manual 46 -© Omniflex
UMM124XBR04.pdf
DIT Number Description
64052 Set the Module ID for the module installed in I/O Slot 2
64053 Set the Module ID for the module installed in I/O Slot 3
64054 Set the Module ID for the module installed in I/O Slot 4
64055 Set the Module ID for the module installed in I/O Slot 5
64056 Set the Module ID for the module installed in I/O Slot 6
64057 Set the Module ID for the module installed in I/O Slot 7
64058 Set the Module ID for the module installed in I/O Slot 8
64059 Set the Module ID for the module installed in I/O Slot 9
64060 Set the Module ID for the module installed in I/O Slot 10
64061 Set the Module ID for the module installed in I/O Slot 11
64062 Set the Module ID for the module installed in I/O Slot 12
64063 Set the Module ID for the module installed in I/O Slot 13
64064 Set the Module ID for the module installed in I/O Slot 14
64065 Set the Module ID for the module installed in I/O Slot 15
64072 - 64079
Modbus Data Register Mapping(Modbus Serial Port only)
This function is only applicable when the Serial Port is being used as a Modbus Slave
port. This next set of registers are used to define the ranges of registers assigned as
“Holding Registers”, “Input Registers”, “Coils” and “Input Status” registers as defined in
the Modbus protocol.
This allows the position and number of registers in the DIT assigned to these Modbus
data types.
64072 Holding Register Start DIT
64073 Holding Register End DIT
64074 Input Register Start DIT
64075 Input Register End DIT
64076 Coil Start DIT
64077 Coil End DIT
64078 Input Status Start DIT
64079 Input Status End DIT
64080 - 64094
Modbus Compressed DIT Addressing(Modbus Serial Port only)
This function is only applicable when the Serial Port is being used as a Modbus Slave
port. Some third party Modbus Master devices cannot address the full range of DIT
registers i.e. 1 – 64549 Holding Registers. In most cases the Modbus Master does
require to access all of these registers – in fact it is typically a much smaller amount of
registers required per I/O Slot. It is therefore possible to reduce the normal address
space allocated per I/O Slot from 4000 to a more suitable number. The remaining DIT
registers are then excluded from the address space thus allowing the Modbus Master
to access all required I/O within its limited address range.
This is accomplished by specifying a User start address for each I/O Slot as indicated
below.
64080 User Start Address for I/O Slot 1
I/O Slot 1 will always start from 4000 and cannot be changed.