Ransburg AdaptaFlow Node Adapter A10159 - Manual (Page 14)

LN-9217-00.2
OPERA OPERA OPERA OPERA OPERATION TION TION TION TION
AdaptaFlow Node Adapter - Operation
DISCRETE I/O DISCRETE I/O DISCRETE I/O DISCRETE I/O DISCRETE I/O
The Node Adapter Card communicates with Allen-
Bradley PLC's using remote I/O protocol. Two
types of data are used; discrete inputs and outputs,
and Block Transfer Data.
Discrete I/O: There are two words of discrete
inputs and two words of discrete outputs for each
flow controller. These are assigned to words 1
and 2 of the Node Adapter's rack address. Word
0 is not used.
Discrete I/O Bit Descriptions Discrete I/O Bit Descriptions Discrete I/O Bit Descriptions Discrete I/O Bit Descriptions Discrete I/O Bit Descriptions
- Refer to Figures 6-9 - Refer to Figures 6-9 - Refer to Figures 6-9 - Refer to Figures 6-9 - Refer to Figures 6-9
CPU OK CPU OK CPU OK CPU OK CPU OK
This bit is high if the communication to the flow
controller via the Node Adapter is working. This bit
is low if the flow channel card is not plugged in or
fails to acknowledge in some way.
First Power Up Flag First Power Up Flag First Power Up Flag First Power Up Flag First Power Up Flag
This output bit mirrors the status of the input bit if
the flow controller has been previously pro-
grammed.
Closed Loop Flag Closed Loop Flag Closed Loop Flag Closed Loop Flag Closed Loop Flag
This bit shows the position of the switch on the
front panel of the flow channel card. When this
switch is in the “open” position, the hard wired
analog input from pin 26C is directly connected to
analog output #1 (pin12A, Transducer Output). If
the AdaptaFlow uses the Node Adapter interface,
the system will not be operational in the “open”
position.
Setpoint Achieved Setpoint Achieved Setpoint Achieved Setpoint Achieved Setpoint Achieved
This bit is high when the flow rate falls within the
tolerance band established by the PID tolerance
value. If the flow controller cannot maintain the set
rate, this bit can be used to flag a low or high flow
rate error.
Low Rate Limit Alarm Low Rate Limit Alarm Low Rate Limit Alarm Low Rate Limit Alarm Low Rate Limit Alarm
This bit goes high when the flow rate is below the
value programmed in the global data table for flow
limit 1. This can be used as a low-low alarm to alert
the operator to a serious problem.
High Rate Limit Alarm High Rate Limit Alarm High Rate Limit Alarm High Rate Limit Alarm High Rate Limit Alarm
This bit goes high when the flow rate exceeds the
value programmed in the global data table for flow
limit 2. This can be used as a high-high alarm to
alert the operator to a serious problem.
Totalizer Reset Totalizer Reset Totalizer Reset Totalizer Reset Totalizer Reset
When this output is set high, the totalizer will reset
to zero. It will stay at zero as long as this bit is high.
Transparent Mode Transparent Mode Transparent Mode Transparent Mode Transparent Mode
This function works only in the hard wired non-
Node Adapter mode of operation. When this bit is
true, the flow controller will apply the hard wired
analog input from pin 26C to analog input #1 (pin
12A, Transducer Output). If the Adapta-Flow
uses the Node Adapter interface, the system will
not be operational in the Transparent mode.
Hold Mode Hold Mode Hold Mode Hold Mode Hold Mode
When this bit is high, the flow controller will not
control the flow output. Instead, the flow controller
freezes the analog output and holds it at the
current value. If the unit is placed in hold mode and
the commanded flow rate is changed, an open
loop table pick of the analog output data for the new
commanded flow rate occurs. This hold mode can
be used during paint pushout or to control flow rate
should a loss of feedback occur.
Hold Totalizer Hold Totalizer Hold Totalizer Hold Totalizer Hold Totalizer
When this bit is high, the totalizer does not
accumulate flow data. This can be used during a
purge or a paint to bell.
Trigger On Trigger On Trigger On Trigger On Trigger On
This bit is not currently being used. This bit will be
used in the future to tell the flow controller when
paint should be flowing. Currently this is done only
by setting the Cutoff Frequency value.
1 1 1 1 1 1 1 1 1 1
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