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Troubleshooting
This section describes some basic troubleshooting techniques for the serial/Ethernet transla-
tion units (Digi boards) and the Serial Hall Call Driver Assembly (SC-HCDA).
Serial/Ethernet Translation
The serial I/O protocol used for MCE serial hall call and serial I/O board connections is trans-
lated to and from Ethernet bus protocol for system level communication over the iControl Sys-
tem network. (System hub in iCentral dispatcher. Orange TCP/IP cables.) One of two
assemblies is used:
• SC-HCE-ME
• SC-HCE-EM
The base circuit board is the same for both units. The Ethernet port module used is different.
These assemblies are mechanically configured, then programmed using a special utility pro-
gram running on a Windows 2000 or XP personal computer.
SC-HCE Assemblies
The SC-HCE-ME assembly is shown in the illustration below.
Figure 5.18 SC-HCE-ME Serial/Ethernet Translation Assembly
Fuse 1/2A, 250V AGC
5-36 Manual # 42-02-2222
U2: Field Programmable Gate Array (FPGA)
MCE Part # 21-PR-0049, SC-HCE-ME U2
Programming header
Ethernet port and indicators. The port used on
the -ME module is different.
Jumpers JP1, JP2, JP3
Ribbon cable connection to
Serial Driver assembly.
Status LEDs:
FHCE OK (fuse),
Bus Error
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Table of Contents
Troubleshooting
