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ROC800-Series Instruction Manual
1-14
General Information
Revised Jul-14
log-on ID supplied to the ROCLINK 800 software must match one of
the IDs stored in the ROC800.
The operating system firmware supports the application-specific
firmware supplied in the Flash ROM. The application firmware includes
Proportional, Integral, and Derivative (PID) Control; FSTs;
Spontaneous-Report-By-Exception (SRBX) Communications
Enhancement; optional American Gas Association (AGA) Flow
calculations with station support; and optional IEC 61131-3 language
programs (using DS800 Development Suite software). Applications
reside in the firmware, so you do not need to re-build and download the
firmware for changes in calculation method.
Input Module
Addressing
The Series 1 ROC800 defaults to 16-point addressing, but
automatically switches to 8-point addressing if you add a fourth or
fifth expansion backplane.
The Series 2 ROC800 defaults to 8-point addressing. To switch to 16-
point addressing, you must manually select this option.
Note
:
To change input module addressing, select
ROC
>
Device
Information
in ROCLINK 800. On the Device Information
screen’s General tab, select either
8-Points Per Module
or
16-
Points Per Module
in the Logical Compatibility Mode frame
and click
Apply
.
The difference between 16-point and 8-point addressing becomes
critical when you have a host device reading data from specific TLPs.
For example, under 16-point addressing, channel 2 for a DI module in
slot 2 is referenced by TLP 101,33,3. Under 8-point addressing, channel
2 for a DI module in slot 2 is referenced by TLP 101,17,23.
Table 1-4
illustrates the difference between 8-point and 16-point addressing.
Table 1-4. 16-Point vs. 8-Point Addressing
Slot Number
Logicals (16 pt)
Logicals (8 pt)
0
0–15
0–7
1
16–31
8–15
2
32–47
16–23
3
48–63
24–31
4
64–79
32–39
5
80–95
40–47
6
96–111
48–55
7
112–127
56–63
8
128–143
64–71
9
144–159
72–79
10
N/A
80–87
11
N/A
88–95
12
N/A
96–103
13
N/A
104–111
14
N/A
112–119
15
N/A
120–127
16
N/A
128–135
17
N/A
136–143