Rockwell Automation 8520-9API 9/Series OCI API Developer's Guide - Manual (Page 173)

6–5 Array Indices and Strings
Publication 8520-6.6 - August 1999
DOWNLOAD_IN_PROGRESS enumeration
The download_in_progress enumeration is used to identify the
current status of AMP and PAL downloads. The enumeration is:
Enumeration: Result:
0 Idle
1 AMP Download Started
2 AMP Download Complete
3 PAL Download Started 1
4 PAL Download Complete 1
Important: 1 Enumeration does not apply to the 9/PC CNC.
DH_CHANNEL_TYPE enumeration
The data highway channel type enumeration is used to select a
communication port on the data highway module. The
DH_CHANNEL_TYPE enumeration is:
Enumeration: Result:
0 Available (but not configured)
1 DH Plug Port A
2 DH Plug Port B
3 RS232 Serial Port
4 RS422 Serial Port
Important: Enumeration does not apply to the 9/PC CNC.
DH_COMMAND enumeration
The data highway command enumeration is used to make requests
for data transfers through the data highway module. The
communication command enumeration is:
Enumeration: Result:
w Write Variables
r Read Variables
f Send Fixed Status
d Download File
0 Empty Command (zero)
Important: Enumeration does not apply to the 9/PC CNC.