Rockwell Automation 57C445 AutoMax PC Link Interface Module - Manual (Page 38)

D2Ć3
2.3.1 Drop 0 Register Definition
Drop 0 contains the status and control registers. They are defined in
Table 2:
Table 2 Ć Drop 0 Register Definitions
Register Description Access
0 Not Used
1Ć3 Not Used
4 Drop 0Ć15 status bits in bits 0Ć15 Read Only
5 Drop 16Ć31 status bits in bits 0Ć15 Read Only
6 Drop 32Ć47 status bits in bits 0Ć15 Read Only
7 Drop 48Ć55 status bits in bits 0Ć7 Read Only
8Ć11 Not Used
12 Drop Number Read/Write
13 Not Used
14 Messages Received Read/Write
15 Receive Timeouts Read/Write
16 CRC Errors Read/Write
17 Overrun Errors Read/Write
18 Abort Errors Read/Write
19 Messages Transmitted Read/Write
20 Drop Depth Read/Write
21 Not Used
22 Not Used
23 Not Used
24 Not Used
25 Not Used
26 Not Used
27 Not Used
28 Not Used
29 Card ID = 6466 (1942h) Read Only
30 Not Used
31 Not Used
32Ć39 Broadcast Data Read Only
40Ć62 Not Used
63 System Use Only
Note that the PC Link module will not go on line" while either the
drop number or the drop depth is equal to zero (which is the initial
state). The module will still monitor all other active drops and provide
all register information without going on line."