Operating Instructions

Chapter 4—Troubleshooting
Troubleshooting the TX-I/O Island Bus
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Siemens Industry, Inc.
Owner's Manual
553-104
Building Technologies
2018-10-01
PXC Compact defaults to Ethernet ALN but continues to display
parameters for RS-485 P2 ALN.
1. Generate the Field Panel Configuration report by entering the following at the HMI:
S, H, F, D (System, Hardware, Fieldpanels, Display).
2. Verify the field panel settings on the Field Panel Configuration report (such as the
ALN baud rate for P2 ALN or an IP address for Ethernet TCP/IP ALN).
3. Verify the current ALN type on the Field Panel Configuration report.
NOTE:
Changing the ALN type coldstarts the field panel.
4. If needed, change the ALN type by entering the following at the HMI: S, H, F, C, E,
M (System, Hardware, Fieldpanels, Config, nEttype, Modify). (S, H, F, C, S, T for
Firmware Revision 2.8.3 and earlier.)
Errors
The error E3600(0x0E10) - Invalid FLN number displays when
adding a point to a PXC-16 or PXC-24 with FLN support.
 Since the PXC-16 and PXC-24 support only one FLN port, only 0 or 1 can be
entered for the FLN number.
PXC Compact program and database are not down-line loading
properly.
 Verify that the Insight software is at least Revision 3.7 (PXC-16 and PXC-24) or
3.10 (PXC-36).
Troubleshooting the TX-I/O Island Bus
The 24 Vac LED on the TX-I/O Power Supply or the P1 Bus Interface
Module (BIM) is OFF.
1. Check for 24 Vac input.
2. Replace the fuse (4A, 5 × 20 mm, 250V, medium-acting, ceramic fuse).
All points on the TX-I/O island bus are failed.
1. Verify all three signals, System Neutral ( ), Communication Data (CD), and
Communication Supply (CS) are connected throughout the entire TX-I/O island
bus.
The I/O module status LED (under the address key) is flashing or the I/O
point status LED is flashing on an open point. All points are operating
normally.