Hitachi CP-X10000 User Manual page 154

Calculation of Checksum
Sum up all of 12 bytes except the Checksum, then make the bit inversion of the
lowest byte of the total, and add 1 to the inverted byte. The calculated result is
the Checksum data.
Exp. Communication Group: A / Communication ID: 1
Header Packet
Type
BE EF 83
BE + EF + 83 + 06 + 01 + 01 + 01 + 00 + 00 + 60 + 01 + 00 = '029AH'
The lowest byte of '029AH' is '9AH' (1001 1010). Making the bit inversion of the
'9AH' gets '65H' (0110 0101), then, add 1. The calculated checksum is '66H'.
Group and ID Settings
This daisy chain command can adjust the control range by using the Group
identifi cation and ID.
Group ID
1~16 1~64 Individual control
1~16 0 Designated control
according to the
Group identifi cation
0 1~64 Designated control
according to the ID
0 0 Unlimited.
Header data (7 bytes)
Data Size Group
06 01
Direction
ID Checksum
01 66
The command is available to the projectors having
the same Group identifi cation and ID numbers with
command setting.
The command is available to the projectors having
the same Group identifi cation with command setting.
The command is available to the projectors having
the same ID number with command setting.
The command is available to the all projectors.
Daisy Chain Communication
Command data (6 bytes)
Action Type
01 00 00 60
note
Setting
Code
01 00
15