1-6
Brooks
®
Model SLA5840
Section 1 Introduction
Installation and Operation Manual
X-PR-SLA5840-Series-RevB-RT-eng
Part Number: 541B201AAG
October, 2017
Figure 1-1 SLA5840 Analog/RS485 Connections and Pinouts
RS485 Communications
The Brooks Digital Series is equipped with RS485 communication capability. Refer to Figure 1-2 (Analog I/O pin
connections), that enables the device to communicate via a personal computer for process control.
Baud rate selections for the Brooks Digital Series related to RS485 are: 1200, 2400, 4800, 9600, 19200 and 38400
baud and can be selected via the Brooks Expert Support Tool (BEST).
The RS485 is essentially a multidrop connection. It allows a maximum of 32 devices to be connected to a
computer system. IBM-compatible PC's are not equipped with RS485 ports as standard. An RS232/USB to RS485
converter or RS485 interface board is therefore required to connect an RS485 network to a standard PC. The
RS485 bus, a daisy chain network, meaning that the wires are connected at the units.
Note: Aux Input is used for Remote Transducer Pressure Controllers only.
Note: Aux Input is used for Remote Transducer Pressure Controllers only.
