Configure firmware 
  2.4 "Advanced" tab 
Firmware/BIOS description SIMATIC IPC BX-39A, IPC PX-39A, IPC PX-39A PRO 
Operating Instructions, 01/2023, A5E51110693-AA 
17 
Firmware setting  Value  Setting in de-
Meaning 
•  Driver Disable Delay 
(only when "Trans-
ceiver Mode" = 
"RS485 Half Duplex" 
or "Transceiver Mode" 
= "RS485/422 Full Du-
The driver disable delay is disabled. 
The driver disable delay is set to one bit length. 
The driver disable delay is set to two bit lengths. 
Select: "Setup Utility (Page 10)" > "Advanced" > "Peripheral Configuration". 
 
Firmware setting  Value  Setting in de-
Meaning 
IPC BX-39A 
IPC PX-39A 
Onboard Ethernet 1 
(LAN 1, X1 P1)
 
The onboard Ethernet interface "X1 P1" is disabled. 
The onboard Ethernet interface "X1 P1" is enabled. 
Onboard Ethernet 2 
(LAN 2, X2 P1)
 
The onboard Ethernet interface "X2 P1" is disabled. 
The onboard Ethernet interface "X2 P1" is enabled. 
(LAN 3, X3 P1) 
The onboard Ethernet interface "X3 P1" is disabled. 
The onboard Ethernet interface "X3 P1" is enabled. 
Onboard Ethernet 4 
(LAN 4, X4 P1)
 
The onboard Ethernet interface "X4 P1" is disabled. 
The onboard Ethernet interface "X4 P1" is enabled.