Communication DMA-20 ↔ STG-570
Overview
The communication between STG-570 and DMA-20 is made via a CAN bus with a baud rate of 250 kBit/s.
The internal filter will not process CAN messages that do not have the ID 0x7FD.
Pressing a displayed button causes a CAN message to be sent to ID 0x7FC.
Template 0 - Intro Screen
This screen is displayed after power on until a CAN message with the ID 0x7FD is received.
Show Template
CAN-ID: 0x7FD
DLC: 8 Byte
| Byte 0 | Byte 1 | Byte 2 | Byte 3 | Byte 4 | Byte 5 | Byte 6 | Byte 7 |
U8 Template number 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 | 0x00 |
Template 4 - „ Colored screen “
Show Template
CAN-ID: 0x7FD
DLC: 8 Byte
Byte 0 | Byte 1 | Byte 2 | Byte 3 | Byte 4 | Byte 5 | Byte 6 | Byte 7 |
U8 | not used | U8 | U8 | U8 | not used | not used | not used |
Template number 0x04 | 0x00 | blue 0 … 255 | green 0 … 255 | red 0 … 255 | 0x00 | 0x00 | 0x00 |
0 = 0% | 0 = 0% | 0 = 0% | |||||
255 = 100% | 255 = 100% | 255 = 100% |
Example
Blue: 255
Green: 255
Red: 255
This shows a white screen.
CAN-ID:0x7FD
DLC:8 Byte
Byte 0 | Byte 1 | Byte 2 | Byte 3 | Byte 4 | Byte 5 | Byte 6 | Byte 7 |
0x04 | 0x00 | 0xFF | 0xFF | 0xFF | 0x00 | 0x00 | 0x00 |