Specifications

BayTech Addendum Publication No. Z140A186
Reference BayTech Manual Publication No. U140E121-03 Page 7 of 10
4.7 LED INDICATORS
Each DS73 has three LED indicators on the rear panel and four LED indicators on the front panel of the base unit
corresponding to the module slot where the DS73 is installed (i.e., Module 1, Module 2, etc.). The LEDs on the
module rear panel are marked as LINK, RX/TX and CX. The green LINK LED illuminates if the DS73 has a good
10BASE-T connection. Failure of this LED to illuminate indicates a physical connection problem only if twisted pair
cabling is being used. The red RX/TX CX LED’s indicates network activity.
The four LED indicators on the front panel of the base unit are used for diagnostics and operation.
4.7.1 DIAGNOSTIC LED INDICATIONS
When the DS-Series DAC unit is reset or powered up, the LEDs on the base unit will go through a scanning
sequence beginning with Module 1 Port 1 and ending with the highest module number Port 4. Then a certain number
of LEDs corresponding to the number of installed modules will stay on for a brief period of time. For example, if six
modules are installed, the LEDs for Module 1 Ports 1 through 4 and Module 2 Ports 1 and 2 will stay on briefly. Next,
the LEDs will scan down beginning with the highest module number Port 4 and ending with Module 1 Port 1. If you
notice one of the LEDs corresponding to the number of installed modules stay on after the LEDs scan down, this
indicates a failure with the corresponding module. For example, if the LED for Module 1 Port 2 stays on after the
LEDs scan down, then Module 2 has a problem.
The DS73 will give diagnostic indications approximately five seconds after completion of the reset/power-up scan.
The first diagnostic indication is a hardware check. If the DS73 hardware checks out, all four DS73 LEDs will flash
once. If a hardware failure is detected, one of the first three LEDs for the DS73 module will flash continuously. If this
happens, you should contact BayTech.
If the hardware check passes, the DS73 will read the configuration parameters from the main board non-volatile RAM.
If the DS73 configuration checks out, all DS73 LEDs will flash once. Therefore, if the DS73 hardware and
configuration checks both pass, you should notice all four LEDs on the DS73 flash twice. If you notice that one of
the DS73 LEDs flashes continuously after the hardware check passes (i.e., after all four DS73 LEDs flash once), this
indicates that a configuration error has been detected. If this happens, the DS73 will not respond to any network
access attempts. Configuration problems can be corrected by programming the indicated parameter as follows:
DS73 CONFIGURATION DIAGNOSTIC LED DESCRIPTION
Flashing
LED
Description
1 Non-volatile Memory Fault. The data stored in the non-volatile RAM for the DS73's location contained an
error. This causes the device in question to be programmed with default parameter information and the IP and
Gateway addresses and the subnet mask will be set to 0.0.0.0. The module will need to be reconfigured and reset
before it can operate. This symptom will occur when the DS73 is installed into a module slot previously occupied
by a different module type.
2 Ethernet Address Fault. If an error occurs in the retrieval of the module's Ethernet address, the address will be set
to all 0s, an invalid address. Before the module can operate, it will need to be programmed with a proper address.
This address cannot be programmed directly by the user. Contact BayTech if this LED symptom occurs.
3 IP Address Fault. When a module is first installed, it will program its IP Address to 0.0.0.0. The IP Address will
need to be programmed before the module can operate.
4 Subnet Mask Fault. When a module is first installed, it will program its Subnet Mask to 0.0.0.0. The Subnet
Mask will need to be programmed before the module can operate.
NOTE: When you power up the DS-Series with a DS73 installed for the first time, the LEDs for Ports 3 and 4 for the
DS73 will flash continuously until you program the IP Address and Subnet Mask (see Section 5) and reset the unit.