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Example:
08
SDO MESSAGE
12. OBJECT 2000H: DIGITAL INPUT MODULE, KEYS STATES
A SDO (Service Data Object) is providing direct access to object entries of a CANopen device's object
dictionary.
This module contains all the Switch State information.
A one indicates the switch is pressed, a zero indicates the switch is released.
The keypad must be activated, see NMT Start CANopen Node message.
Identifier
600h + current CAN ID
Default 615h
Byte 0
40h
Read Device Register
Byte 1
00h
CAN Object 2000h
Byte 2
20h
Byte 3
01h
Sub index
Byte 4,7
00h
Not used
• PK2300
Direction
Identifier
Format Message
Data
To Keypad
615
Std
40 00 20 01 00 00 00 00
Keypad
reply
595
std
4F 00 20 01 00 00 00 00
No key pressed
4F 00 20 01 01 00 00 00
Key 1 pressed
4F 00 20 01 02 00 00 00
Key 2 pressed
4F 00 20 01 04 00 00 00
Key 3 pressed
4F 00 20 01 08 00 00 00
Key 4 pressed
4F 00 20 01 10 00 00 00
Key 5 pressed
4F 00 20 01 20 00 00 00
Key 6 pressed
4F 00 20 01 03 00 00 00
Key 1 and 2 pressed
4F 00 20 01 21 00 00 00
Key 1 and 6 pressed
4F 00 20 01 3F 00 00 00
All keys pressed