IFX-21 User Guide
BASF
Appendix
7/12/2019
V004
22 of 22
NOTE: Since the automatic address feature causes two addresses to be allocated, one for the
IFX21 and one for the pyrometer, make sure no other device on the network uses either of
those addresses. For example, if an IFX21 is assigned the MODBUS slave address 1,
addresses 1 and 2 will be allocated, and no other MODBUS device on the RS485 network
may be assigned either of those addresses. If a network has multiple IFX21 devices, they
must be addressed at least 2 slave addresses apart (i.e., first device at 1, second device at 3,
third device at 5.) In this example, the pyrometers would be addressed at 2, 4, and 6.
F
IGURE
11:
A
UTOMATIC
A
DDRESSING
MODBUS
REGISTER MAP
The MODBUS/TCP register map is identical to the pyrometers. No MODBUS locations are
added or removed. See the pyrometer documentation “BASF Communication
Specification.pdf” for details.
