24
No Communication
When the Central and/or Remote unit is not communicating with its partner, the status LED will flash green/red. To
troubleshoot communication issues, check the following:
•
Power:
• Both units must be powered.
• Ensure proper power requirements are met: Unregulated Input 8 to 16Vdc @ 300mA max.
•
Installation:
• The Central and Remote units must be able to see each other on the network. To test this, ping the Remote
units IP address from the Central’s network location or vice versa. If there is no response from the unit being
pinged, the two network locations are not connected and are not suitable for use with the SPX-7200.
• In some instances, managed network switches can block the communication of the SPX-7200 units.
Either disable the managed functionality of the switch, or create an exception for the SPX-7200 units.
• Ensure the Remote unit’s IP address is set as the Remote Host in the Central unit.
• Ensure the Central unit’s IP address is set as the Remote Host in the Central unit.
• Ensure all of the IP settings are compatible with the network; i.e. IP address, Subnet Mask, Default
Gateway, and DNS Server.
• If connecting the units directly to each other, make sure an crossover cable is used.
•
Configuration:
• Ensure both Suprex units are set to the correct link type (see Configuration Mode, pgs. 7-9).
• Ensure Suprex units’ network settings are properly configured (see pgs. 15-20).
No Data / Invalid Data
If the access control panel is not receiving valid data, check the following:
•
Basic
Equipment Check:
• Ensure the reader and the access control panel data port are functional by directly connecting the reader to the
data port and passing card data.
• Check Suprex circuit boards for any signs of visual damage, such as burnt traces, burnt components, or
browning of the PCB; these usually indicate misapplied power.
•
Wiring:
• Ensure there is a common ground between the Remote unit and the card reader.
• Ensure there is a common ground between the Central unit and the access control panel.
• Ensure Wiegand data wires are correctly connected and not reversed.
•
Configuration:
• Ensure both Suprex units are set to the correct interface type (see Configuration Mode, pgs. 7-9).
• Ensure the access control panel is properly configured for the selected data format.
•
Data Voltage:
For a Wiegand connection, ensure Data 0 and Data 1 pins on Central and Remote units are at 5V
relative to ground. The data pins can be as low as 4.4V before failing. If any Wiegand data pin is less than 4.4V, it is
necessary to identify which device is pulling down the voltage.
• Disconnect the Suprex from the reader/panel.
• Maintain power on the Suprex and the reader/panel.
• Independently measure the voltages of the Wiegand data pins of the Suprex, and of the reader/panel. If one or
both devices have 4.3V or less, try enabling the pullup resistors on the Suprex by turning on DIP switch 5.
• If internal pullup resistors do not work, try external pullup resistors (through-hole resistor 500ohms - 2Kohms). To
install external pullup resistors, place one end of the through-hole resistor into the +5Vdc pin on the Suprex unit;
place the other end in the low-voltage Wiegand data pin (see pg. 5).
Cypress Suprex® Ethernet Series - Troubleshooting
