↓CMD_ACKパケットの仕様は以下の通りです
Cordless SSI Programmer’s Guide Page-40 CMD_ACK Positive acknowledgment of received packet
https://www.zebra.com/content/dam/support-dam/en/documentation/unrestricted/guide/software/ssi-cordless-pg-en.pdf
CMD_ACKパケットの具体例:
※2Byteチェックサム(2の補数) に付いては以下計算結果となります
= 計算式NOT(04 + D0 + 04 + 00) + 1 = FF28
DCS0123