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Power Cycle the Single-Port DeviceMaster +5VDC

Use this guide to power cycle a single-port DeviceMaster, typically located in a JB20 junction box.

Fleetwatch FMS · Fuel Lane Hardware
Resetting the Single Port DeviceMaster
The Single Port DeviceMaster connects the RIH3000R to the network: it converts the RIH’s serial connection to Ethernet so the Fleetwatch server can talk to it. If the DeviceMaster stops responding, the RIH loses communication with the server. Power cycling the DeviceMaster usually restores the connection.

When to Use This Procedure

Use this when turning CB1 off and on doesn’t reset the DeviceMaster
Power cycling the RIH with the CB1 breaker normally resets everything at the lane. At some sites, though, the DeviceMaster stays powered (its LEDs stay lit) even with CB1 off, so it never resets. In that case, reset the DeviceMaster directly by unplugging its own power plug, as described below.

Signs that a reset is needed: the Service Activity Monitor (SAM) in Data Tools shows any of the following for an RIH:

• Alternating or solid red status LEDs
• An “RIH is Not Responding” message
Single Port DeviceMaster with LEDs lit
Figure 1: Single Port DeviceMaster
A small black box, about the size of a deck of cards, with four status LEDs on the front: 100, Duplex, Link/Act, and Status. The power plug is on the end marked +5VDC, the network cable is on the end marked 10/100 Ethernet, and the serial cable to the RIH connects to the RS-232/RS-422/RS-485 port.
⚠ Before you open the JB20
The JB20 junction box contains live power. Only qualified personnel should open it. Don’t touch terminals or wiring; this procedure only needs the CB1 breaker and the DeviceMaster’s power plug. Fueling at the affected lane may be interrupted while the DeviceMaster restarts.

Steps

1
Locate the JB20 junction box.
It’s typically behind, underneath, or next to the RIH3000R, and connected to it with three (or four) flexible conduit “octopus” cables. The Single Port DeviceMaster is usually inside the JB20. RIH3000R and JB20 junction box with octopus cables
Figure 2: RIH3000R (left) and JB20 junction box (right)
2
Check that CB1 (RIH Power) is ON.
Inside the JB20, CB1 should be in the ON (UP) position. CB1 powers the RIH and its peripherals.
• If CB1 is off: turn it on, then check communication status in SAM (step 6) before going any further. A tripped breaker may have been the whole problem.
• If CB1 is on and the DeviceMaster’s LEDs are lit: continue to step 3.
JB20 interior layout showing CB1 and CB2 breakers
Figure 3: CB1 is on the lower rail, to the left of CB2. Turn it on if it’s off.
If CB1 trips again after you turn it on, leave it off and contact Fleetwatch Support. A breaker that keeps tripping points to a wiring or hardware fault.
3
Unplug the DeviceMaster’s power.
Find the power plug, usually a black plug at the end of the DeviceMaster marked +5VDC (see Figure 4). Pull it out. Leave the network and serial cables connected.
4
Wait at least 30 seconds.
All the LEDs should go dark. Keep the power disconnected for the full 30 seconds so the DeviceMaster resets completely.
5
Plug the power back in and check the LEDs.
Give the DeviceMaster about a minute to start up, then confirm the LEDs match the table below.
LED Expected What it means
100 ● Red Network connected at 100 Mbps
Duplex ● Red Full-duplex network connection
Link/Act ● Red Network cable connected; flickers when data is moving
Status ● Amber/yellow DeviceMaster is powered on and running
DeviceMaster with arrow pointing to the +5VDC power plug
Figure 4: The power plug (arrow) is at the +5VDC end of the DeviceMaster. All four LEDs are lit here, as expected after a restart.
6
Check communication status in SAM.
Log into Data Tools and open the Service Activity Monitor (SAM) utility. Check the comm status LEDs and messages for the affected RIH(s).
SAM RIH unit tile showing three green status LEDs and Communication Established
Figure 5: RIH status in SAM
✔ Working
Three solid green status LEDs and the message “Communication Established.”
✘ Still not working
Alternating or solid red LEDs, or “RIH is Not Responding” messages. Further troubleshooting is needed; see below.

If It Still Isn’t Communicating

What you see What to check
No LEDs on the DeviceMaster The DeviceMaster isn’t getting power. Make sure CB1 is on and the +5VDC plug is fully seated. If it still won’t light, the power supply may have failed.
Status lit, but Link/Act is off No network connection. Check that the Ethernet cable is firmly seated at the DeviceMaster and at the network switch, and that the switch port is active.
All LEDs normal, SAM still red From the Fleetwatch server, ping the DeviceMaster’s IP address to confirm it’s reachable on the network. Also check that the serial cable between the DeviceMaster and the RIH is secure.
For system validation or any questions, contact Fleetwatch Support.