Zigen HX-44 - Manual (Page 32)

Matrix Switching System—User Manual
31
A-2 Device ACK Packet
When the device receives supported commands comes from the host, and then will
response with following ACK:
Table
– ACK Type List
Ack Type Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6 … Last Byte
Type A AB CB
Type B AB LB Index 1 Value 1 Index 2 Value 2 … CB
Type C AB LB Data 1 Data 2 CB
Type D AB LB INF OP IP Name 1
…
CB
Type E AB LB EXINF VEINF AEINF PLUG
…
CB
A-2.1 ACK Type A
ACK Byte + CRC Byte (Total 2 Bytes)
Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
AB ACC 0 0 Device ID (0
– 31)
CB CRC
ACC: The devices acknowledge status. Accept or Reject.
1: device accepts this request. (ACK; acknowledge)
0: device rejects this request. (NAK; negative acknowledge)
 The device sends the Nak packet is always 2 bytes. (NAK + CRC)
0: Reserve, Always 0.
1: Identifier, Always 1.
Device ID: Device id ranges from 0 to 31. (
Please refer to device’s user manual)
CRC: Device always sends the CRC code to follow the last byte.