Communication protocol with LPOS2-RS485-065 (LPOS2-RS485-129).
The document includes the following sections:
System Description
1.1. Compatible with KBM-106-RS485-Mxx
1.2. Pin
1.3. The key layout
2. Minutes of the remote control
2.1. addressing device
2.2. Minutes LE
2.2.1. Request for determination of present devices
2.2.2. Request initialization device
2.2.3. Query settings
2.2.4. Request control LED
2.2.5. Request to get the current state of LED
2.2.6. The alarm
2.2.7. Getting the number of data in the buffer
2.2.8. Reading data from buffer
2.3 of the Protocol MPOS-RS485
2.3.1. The transport layer protocol
2.3.2. The level of requests
2.3.2.1. Management of individual LED
2.3.2.2. Purpose of the same group of LED status
2.3.2.3. Appointment of the state of a group of LEDs
2.3.2.4. Reading the individual LEDs
2.3.2.5. Reading Group Status LEDs
2.3.2.6. The alarm
2.3.2.7. Reset Device
2.3.2.8. Getting data from the keyboard buffer
P1. Example of checksum calculation CRC8