Appendix A: D50 PLC Communication Protocol 163
Read Words
• Read the content of the words (R, L, M, K, F, or W) assigned to the absolute address.
• Read n consecutive words.
Query (Q) Frame
Response (R) Frame
Number of words
to be read.
Word absolute address
(starting address)
For example: K27
Word absolute address = $014C
Base L = $4C, H = $01
Base CRC
DA SA $03 $03 L H N L H
N word values from the base
words re
uested b
the Q.
Length L = N×2
Base + 0 Base + word value Base + N word values CRC
DA SA $83 L L H L H … L H L H
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