Vaisala GMP231 - Manual (Page 27)

Chapter 4 ____________________________________________________ Vaisala Industrial Protocol
VAISALA ________________________________________________________________________ 25
CHAPTER 4
VAISALA INDUSTRIAL PROTOCOL
This chapter describes the Vaisala Industrial Protocol implementation of
the GMP231.
Overview
RS-485 line of the GMP231 provides an implementation of the Vaisala
Industrial Protocol that can be used for service and configuration use, or
for interfacing with the incubator’s control system. The protocol is a
plaintext protocol suitable for use both by human operators and
automated systems.
Table 6 Default Serial Interface Settings
Property Description / Value
Baud rate 19200
Parity None
Data bits 8
Stop bits 1
Flow control None
Physical Interface
The physical interface is a non-isolated 3-wire interface. The data lines
are RS-485 D- and RS-485 D+. Ground is shared with power supply.
The connector is an 8-pin male M12. For connector pinout and wiring
information, see section Wiring on page 24.