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# 109 "M Bus IO default status":
DDCSV through RS232 protocol bus IO expansion(#109=1)
Output data packet 7 bytes, including three parts:
1. Data packet header 2 bytes "0x90 0xeb"
2. Output IO word 4 bytes, 0 bit -31 bit are mapped to # 1032- # 1063 macro variables
3. the checksum, XOR result of the first 6 bytes
Input data packet 7 bytes, including three parts:
1. Data packet header 2 bytes "0x90 0xeb"
2. Input IO words 4 bytes, 0 bit -31 bit are mapped to # 1000- # 1031 macro variables
3. the checksum, XOR result of the first 6 bytes
Bus output IO signal Instructions for use:
Change the IO status by assigning the relevant macro IO bus output
Example:
# 1032 = 1; set bus IO channel 0 to logic '1'
Bus input IO signal instructions:
M100 bus input IO instruction
#1100 Bus input IO channel number
#1101 Bus input IO expectations value
#1102 waiting time (ms),if <= 0, infinite waiting for the signal to reach the desired value; if> 0, if the signal does not reach the expected value within the specified time，paused.
Example:
(If channel 2 is logic '1', subsequent codes are executed; otherwise, pauses after 1s.)
# 1100 = 2
# 1101 = 1
# 1102 = 1000
M100
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Author
Posted at 2018-10-9 14:12:11