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–
PKP-2300-SI-FR_CANopenUM_REV1.3
9.
Heartbeat message
The heartbeat mechanism for a CANopen device is established by cyclically transmitting the
heartbeat
message by the heartbeat producer.
Refer to
Object 1017h
for more details.
PDO messages
PDO (Process Data Object) are fast telegram messages that can simply manage most important
functions. There are no answers for this kind of messages. Each PDO message has an equivalent
Service Data Object message.
10.
Keys state message
The keypad must be activated, see NMT Start CANopen Node message.
•
PKP-2300-SI-FR
Identifier
180 + current CAN ID
Default 195h
Byte 0
Keys from #1 to #4
0 0 K6 K5 - K4 K3 K2 K1
Keys: 1=pressed; 0=released
Byte 1, 3
00h
Not used
Byte 4
XXh
Tick Timer
Examples:
Direction
Identifier
Format
Message
Key state
From Keypad
195
Std
00 00 00 00 XX No key pressed
From Keypad
195
Std
04 00 00 00 XX Key #3 pressed
From Keypad
195
Std
20 00 00 00 XX Key #6 pressed
From Keypad
195
Std
11 00 00 00 XX
Keys #1 and #5 pressed