iControlr PROFIBUSr, PROFINETr, DeviceNett, and EtherNet/IPt Generation 4 Slot 9 Gateway
20
Part 1605930−02
E 2020 Nordson Corporation
Multicast Messages from the PLC (Modules 2 and 8)
Using Module 2 of Output Image Table
This is the Change Preset command beginning at Address Offset 12.
Address Offset 12 contains the physical gun number to where the Change
Preset command will be sent and Address Offset 13 contains the preset
number.
Use Address Offset 12 for WAIT function, if needed for the Multi Scan
Method.
Using Module 8 of the Output Image Table
This module has been described on page 12 under IO Image
Table−Address Definitions and is an alternate method of sending the
Change Preset command. Each byte beginning with Address Offset 44 is
sequentially assigned to a physical gun number. The Gateway will send a
multicast message to the gun’s KV−Flow node pair whose corresponding
byte changed. The Address Offset of the byte that changed is used to
compute the destination CAN address of the multicast message.
Unicast Messages from the PLC
Using Module 3 of Output Image Table
Module 3 is used to deliver the Preset Data command. Address Offset 14
contains the Ready flag which indicates to the Gateway that the data in this
module is ready to be sent (when equal to one).
Address Offset 15 contains the physical gun number to where the Set
Preset Data command will be sent.
Address Offset 16 contains the preset number to which the Set Preset Data
command’s data will be applied. If Multi−Scan Mode is used, then a zero
must first be written in Address Offset 14. Use Address Offset 14 as for the
WAIT function, if needed for the Multi Scan Method. Table 5 describes the
use of Module 3.
Both KV and Flow related parameters are listed in this module. When the
Gateway detects a change in this module, it will determine whether the
changed parameter is related to a KV or a Flow node. Once the Gateway
determines which nodes require unicast messages to be sent, it will send a
Table 6 message to the gun’s (defined in Address Offset 15) KV node, or to
the Flow/Pump node, or messages to both of them. The preset parameters
may be changed at any time. A given preset’s parameters may be changed
while a gun is triggered ON at that preset, so that elaborate flow variations
onto a part are possible, if desired.
To Next Page
Loading...
