Graco 25A693 Instructions Manual page 18

Intelligent Paint Kitchen Overview
Fiber Fiber Optic Fiber Optic Optic Converter Converter Converter
24N978 24N978 24N978
Installed inside the Supervisor Box (A) and the
Expansion Box, each serial to fiber optic converter
sends data to and receives data from one Pump
Control Module (PD) installed in the hazardous
location of a station.
Data is sent to and from the Pump Control Module
(PD) along a fiber optic cable. A serial cable
connection is made between each fiber optic
converter and the Supervisor Module, and the fiber
optic converters within one Supervisor Box or one
Expansion Box are all wired in series to the 24 VDC
power supply.
Figure 11 Serial to Fiber Optic Converter
Item Description
Item Item Description Description
39 Serial communication connection to
Supervisor Module
40 24 VDC power connection
RX Fiber optic cable connection; receives
data from a Pump Control Module
TX Fiber optic cable connection; transmits
data to a Pump Control Module
A Ground
B Terminal Data B (+)
C Terminal Data A (-)
D Terminal D (not used)
E Terminal E (not used)
18 3A4030C