WAGO -I/O-SYSTEM 750 Technical Description page 57

3.1.5.4.1 Indexing the I/O Module Data
If a customer specific configuration was stored prior to the initialization, and
if the currently connected module configuration coincides with the configura-
tion stored before, initialization takes place with this configuration.
Note
For an example for the initialization of the customer specific configuration,
please refer to chapter 3.1.6.6 "Application specific Mapping".
In every other case, when initializing, the object directory is assigned a default
configuration according to the device profile DS 401.
The entry into the object directory is then made separately according to data
width (1 bit, 1 byte, 2 bytes, 3 bytes, etc...) and input and output.
The physical bus module arrangement within a node is optional.
Data width = 1 Word / channel
Analog input modules
Analog output modules
Input modules for thermal elements
Input modules for resistance sensors
Pulse width output modules
Interface module
Up/down counter
I/O modules for angle and path measurement
Table 3-1: I/O module data width
Note
For the number of input and output bits or bytes of the individual I/O modules
please refer to the corresponding I/O module description.
The digital module data is taken into consideration first.
Knowing that CANopen does not transmit the data bit by bit, the digital mod-
ule data is grouped to form bytes and assigned to the corresponding index,
digital input data to index 0x2000, digital output data to index 0x2100.
The assignment of bus module data of a data width of 1 byte or more is made
in relation to the individual indices.
The table reviews the indices of the bus module data.
Data width
1 Bit digital
1 Byte specialty modules
2 Byte specialty modules
3 Byte specialty modules
4 Byte specialty modules
5 Byte specialty modules
6 Byte specialty modules
7 Byte specialty modules
8 Byte specialty modules
Table 3-2: Indexing the bus module data in the object directory
WAGO-I/O-SYSTEM 750
CANopen
Fieldbus Coupler 750-337, 750-338
Fieldbus Coupler
Data width = 1 Bit / channel
Digital input modules
Digital output modules
Digital output modules with diagnostics (2 Bit / channel)
Power supply modules with fuse holder / diagnostics
Solid State power relay
Relay output modules
input modules
Index
0x2000
0x2200
0x2400
0x2600
0x2800
0x3000
0x3200
0x3400
0x3600
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output modules
0x2100
0x2300
0x2500
0x2700
0x2900
0x3100
0x3300
0x3500
0x3700