IFX-21 User Guide
BASF
Appendix
7/12/2019
V004
21 of 22
READ = Shows during downloading of pyrometer (probe) settings.
10.1.3. P
YROMETER
S
ERIAL
N
UMBER
Typical pyrometer models are listed above with an example of unit’s full serial number. All
serial numbers will have 7 digits (3 alpha and 4 numerical).
MODBUS/TCP
10.2.1. C
ONVENTIONS
This section describes the MODBUS/TCP protocol implementation in the BASF
EXACTUS
®
IFX-21. Where hexadecimal constants are used, they are preceded by 0x
(e.g. decimal 15 is 0x0f.) This document does not describe the details of the
MODBUS/TCP protocol (see
www.modbus.org
for more information)
10.2.2. TCP/IP
P
ORT
MODBUS/TCP is implemented over port 502, the standard port number for
MODBUS/TCP.
10.2.3. MODBUS
A
DDRESSING
Each MODBUS device has an 8-bit address. All of the pyrometers are configured to
respond to the MODBUS address 0x01. When using MODBUS/TCP, always leave the
pyrometer address at 0x01. Use a unit ID (UID) of 1 in the poll.
MODBUS/RTU
(RS485)
I
MPLEMENTATION
The IFX21 must be configured with a MODBUS address. This value is the slave address for
the IFX21 interface itself. No MODBUS registers are presently defined for the IFX21; however
this address is reserved. To address the pyrometer attached to the IFX21, use the next
address.
For example, if the IFX21 is assigned the MODBUS slave address 1, the attached pyrometer
will be automatically assigned the address 2. This translation is done by the IFX21 itself and
does not relate to the MODBUS address assigned to the pyrometer in TemperaSure. The
pyrometer address should ALWAYS be left at the default of 1 in TemperaSure. The IFX21
automatically translates the RS485 network address to the pyrometer address and back.
