Honeywell enCore FC Series - Q.sonic6 Ultrasound Gas Meter: Serial RS485 (Eex D) Via MFE7 Board

Assembly Instructions 6
Page 88 of 120
Operating Instructions
enCore FC
6.4.22 Q.Sonic6 Ultrasound Gas Meter: Serial RS485 (EEx d) via
MFE7 Board
Hazardous Area Safe Area
enCore device
MFE7 board
RSA
SH
GND
RSB
0V24V
TB1:3 (+18..30V DC, 20W) TB1:2 (0V DC)
TB3:1 (TxD RS485)
TB3:3 (RxD RS485)
TB3:2 (GND)
UFM Q.Sonic6
(EEx d)
Fig. 6-27: Interface for ultra sound gas meter (Q.Sonic6):
serial RS485 (EEx d) via MFE7
Consider the recommendations made with regards to cable length
and connection resistors in  chapter 6.4.1 General
Recommendations for Signal and Data Cable (p. 55).