KROHNE ALTOSONIC V Modbus EN - Manual (Page 21)

ALTOSONIC V
ModBus Manual 0300 rev07 E 7.30855.35.00 Page 21 of 64
7.2.1 RS485/422 card: AX4285A
The first generation of RS 485 cards used
DIP SWITCH CH1*** : COM 3 Baseaddress ch#1: 3E8
DIP SWITCH CH2*** : COM 4 Baseaddress ch#2: 2E8
JP1*** : COM3 Interrupt IRQ4
JP2*** : COM4 Interrupt IRQ3
JP3*** : COM3 RS 485 mode
JP4*** : COM3 Serial resistors enabled, No jumpers installed
JP5 : COM4 RS 485 mode as default
JP6 : COM4 Serial resistors not enabled, jumpers installed
***(=Krohne Altometer setting)
NOTE:
RS485 mode and RS422 mode for COM4 (Modbus) differs in set-up by:
-
Jumper JP5 RS485 or RS422
- The external wiring for RS422 and RS485
External wiring AX5285A for Modbus:
The resistors of 120 Ohm must be placed at the Altosonic-V wiring terminal