iControlr PROFIBUSr, PROFINETr, DeviceNett, and EtherNet/IPt Generation 4 Slot 9 Gateway
21
Part 1605930−02
E 2020 Nordson Corporation
Table 6 Sending Data Table Messages from the PLC (IO Module 3)
Address Offset Description of Bytes Range of
Values
Comments
14 Data Ready 0−1 0=WAIT, 1=Ready to Send
15 Gun Number 1−64 Physical Gun Number
16 Preset Number 1−255 Must never be zero
17 KV 0−100 1 count per KV
18 μA 0−100 1 count per μA
19 AFC 0−1 0=AFC OFF, 1=AFC ON
20 Select Charge Number 0−4 0=Standard Mode
21 Flow %
Setpoint/Powder
Setpoint
0−160 Only 0−100 is used with PFCP node
22 Atomize/Pattern
Setpoint
0−160 Atomize or Pattern Setpoint
23 Assist Air Setpoint -50− +50 Only used with PFCP
24 Look-up Table Number 0 − 3 Only used with PFCP
Note: Negative values are in two’s complement form.
Units of Measure for Preset Parameters
On the KV nodes, the units of the KV parameter are KVolts, and the units for
uA are Uamps. These values are easily contained in a 1 byte value and
require no further scaling.
The Flow parameters are less straight forward. When the flow node is the
iFlow module, the Flow and Atomize flow rates (in Address Offsets 21 and
22) are stored in units of counts (which can be stored as a 1−byte integer).
The counts have been chosen such that the values can easily be converted
to English or Metric Flow units of measure. Since any meaningful flow
unit-of-measure requires the use of floating point values, each count
represents a unit of flow expressed as a floating point value. Any display of
flow rates will require the PC/PLC programmer to convert the counts to the
desired units of measure. The conversion is as follows:
S English Units: Counts X 0.025 = SCFM (Std. Cubic Feet per Minute)
S Metric Units: Counts X 0.0425 = SCMH (Std. Cubic Meters per
Hour)
When the flow parameters in Module 3 are used with the PFCP nodes, then
these values have a different specification. The PFCP Powder Flow setpoint
stored at Address Offset 21 is a value from 0 to 100 and it requires no
scaling. For a PFCP node, the Pattern Air setpoint stored at Address Offset
22 uses the same scaling factors as mentioned above for the iFlow. The
PFCP Assist Air Setpoint stored at Address Offset 23 is a value from
−50 to +50.
Using Module 7 of the Output Image Table
This module uses the data in Address Offsets #32 and #33 to determine the
CAN address of the destination node/channel which needs to receive the
unicast message.