PSI System Controls and Diagnostics
F3200E User Manual
F3200E_UM_180726 Page 57 of 107
12
Fiber Optic Loop Communications
The F3200E supports fiber optic loop communications with other Pyramid products. There are
two fiber optic ports on the rear channel, plus two transmitters that can send out digital signals.
The first port is used when the F3200E is acting as loop controller. The second port is used when
the F3200E is a device on a loop managed by another loop controller.
Out
Out
Out
Out
In
In
Channel 1
(F3200E is
loop controller)
Channel 2
(F3200E is device
on a loop)
FT1
FT2
FT3
FT4
FR1
FR2
Process
Status
Enable
Beam
Figure 45. Fiber optic communication ports (view looking at rear panel)
Fiber optic receiver device FR1 is also used as the input for optical gate signals to trigger the
F3200E. This function is therefore unavailable if the F3200E is acting as a loop controller.
12.1 Using the F3200E as a loop controller
As a loop master, the F3200E can connect up to sixteen other devices. Each device must have a
unique address (0 through F) on the loop, set with a rotary switch on the device. The addresses
do not have to be sequential on the loop. The host computer communicates with the slave
devices through the F3200E’s Ethernet port.
In the schematic example shown below, the F3200E is acting as loop controller to two remote
devices, an M10 general purpose I/O device such as might be used to control a power supply, and
an H10 dual Hall probe for magnetic field measurements. The fiber optics can be hundreds of
meters long, and provide perfect electrical noise immunity. When you press “Connect &
Discover Subdevices” in the Discover Devices dialog, the looped devices will be identified and
shown in the system tree on the left of the PTC DiagnsoticG2 display. Their windows can then
be opened so that you can control them and collect data. They operate independently of the
F3200E, which just passes their communications through to the host computer. The only
exception is if you are using real time processing, when the F3200E can coordinate subdevices
during map execution.
