Rockwell Automation 1336T PLC Comm. Adapter, Series B, FRN 2.xx-3.xx - Manual (Page 84)

5–10
Publication 1336 FORCE–5.13 –– September, 1998
The RIO to SCANport, RS232/485 to SCANport, and DeviceNet to
SCANport gateways are some of the devices that use the image.
Refer to the appropriate manual for your gateway (Bulletin 1203
Remote I/O Communications Module, Bulletin 1203 Serial
Communications Module, or the DeviceNet Communications
Module manual).
Setting Up the Analog I/O Parameters
The PLC Communications Adapter Board can transfer analog
information over SCANport.
The following figure shows the five SCANports that are available for
use with the SCANport analog I/O and the PLC Communications
Adapter Board parameters that you can use to control this data.
1
2
3
4
5 SP Analog In Select (Par 391)
386
338
SP Analog
In (Par 338)
1
2
3
4
5
SP Analog
Out (Par 386)
To receive analog input from a SCANport device, you need to:
1. Set the SCANport Analog Input Select parameter (parameter 391)
to the SCANport device number.
2. Link a sink parameter to the SCANport Analog Input parameter
(parameter 338).
For example, if you plug a HIM into port 1 to control the external
velocity, you need to enter a value of 1 for SCANport Analog Input
Select (parameter 391) and link External Velocity (parameter 101) to
SCANport Analog Input (parameter 338). You may scale the
velocity by using External Velocity Scale (parameter 102).
The drive sends SCANport Analog Output (parameter 386) to all
devices connected to SCANport. To send data out to the SCANport
devices, you must link SCANport Analog Output to a source
parameter. For example, if the HIM is to receive Velocity Feedback,
you would link SCANport Analog Output (parameter 386) to
Velocity Feedback (parameter 269).
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