X20 system modules • X20 CPUs • X20CP158x and X20CP358x
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X20 system User's Manual 3.10
4.12.3.16 USB interfaces (IF4 and IF5)
Figure 311: X20 CPUs - USB interfaces (IF4 and IF5)
IF4 and IF5 are USB interfaces. The connection is made using a USB 1.1/2.0 interface.
The USB interfaces can only be used for devices approved by B&R (e.g. floppy disk drive, DiskOnKey or dongle).
Information:
USB interfaces cannot be used for online communication with a programming device.
4.12.3.17 Slots for interface modules
The CPUs have one or three slots for interface modules.
Various bus and network systems can easily be integrated into the X20 system by selecting the corresponding
interface module.
4.12.3.18 Overtemperature cutoff
To prevent damage, the CPU is cut off and reset when the processor reaches 110°C or the circuit board reaches
95°C.
The following errors are entered in the logbook:
Error number
Error description
9204
WARNING: System halted because of temperature check
9210
WARNING: Boot by watchdog or manual reset
Table 293: X20 CPUs - Logbook entries after overtemperature cutoff