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Protocol X DCA
Configuration Guide
A197-0CG-1.00-2 Restricted
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The following table shows the mapping of the various data types for the Coupler for Allen-
Bradley Data Highway.
Type Start Address
(word address)
Num. Words
DI 0 500
DO
*
500 500
AI 1000 500
AO
*
1500 500
*
data type not supported
Table 7 Point Mapping for the Coupler for Allen-Bradley Data Highway
Analog Input partitions in the Partition Definition Table (A197_PAR) can also be used to read
any values located in unprotected memory ranges in the SRU. For example, the Event Buffer
Monitoring values shown in Table 8 can be monitored by configuring an Analog Input partition
with a start word address of 3060 and a Number of Words 7. In the same manner, the system
parameter values described in Table 10 can be read if desired.
Word Address System Parameter Unit
3060 Actual Buffer Level Inte
g
e
r
3061 Average Buffer evel over 100 events Integer
3062 Max Buffer Level since last read Integer
3063 Max Buffer Level since Bootup Integer
3064 Num. of Overflows since Bootup Integer
3065 DI Scan Rate ms
3066 CPU load %
Table 8 Coupler for Allen-Bradley Data Highway Event Buffer Monitoring Values