SIBTF10xx-1xx-Mx
Operation -- continued
Product features -- continued
Auto-Negotiation
The Auto-Negotiation feature allows the SIBTF10xx-1xx industrial switch to configure itself to achieve the best possible mode of operation over a link automatically. The industrial switch broadcasts its speed (10 Mb/s or 100 Mb/s) and duplex capabilities (full or half) to the other devices and negotiates the best mode of operation. Auto-Negotiation allows quick and easy installation because the optimal link is established automatically.
In a scenario where the industrial switch is linked to a non-negotiating device, the admin person may want to disable Auto-Negotiation. In this instance, the mode of operation will drop to the lowest common denominator between the two devices: 10 Mb/s, half-duplex. Disabling this feature provides the ability to force the connection to the best mode of operation.
Link Pass-Through
The SIBTF10xx-110 industrial switch provides a Link Pass-Through feature, which allows monitoring its fiber (FX) and copper (RX) (receive) ports for signal loss. Refer to Figure 14, in the event of an RX signal loss (1), the industrial switch will automatically disable the TX (transmit) signal (2) thus “passing through” the link loss
(3). The far-end device is automatically notified of the link loss (4), which prevents date losses by transmitting data over an invalid link unknowingly.
| media converter A | | | media converter B | |
| disables the fiber TX link | loses the fiber RX link | |
Near-End | Media | 2 | 3 | Media | Far-End |
| |
Device | Converter A | | | Converter B | Device |
| 1 | | | 4 | |
original fault | | | media converter B |
on the copper link | | | disables the copper link |
Figure 14: Link Pass-Through
Fiber Redundancy
The SIBTF10xx-130 industrial switch provides stable, fiber redundancy in highly critical Ethernet and Fast Ethernet segments.
When the fiber redundancy feature is enabled, only one fiber connection (primary) is active at a time. This primary connection is in the forwarding stage while the other fiber connection (secondary) is put in the standby state.
When failure on the primary fiber connection occurs, it is detected by the switch. The secondary connection is activated and becomes the primary link. The original fiber link is disabled until the failure on the primary fiber connection is corrected. Once corrected, the original order is restored.
Note: The fiber redundancy feature is for point-to-point applications, and not for redundant ring applications.
Operation -- continued
AutoCross™
When the AutoCross feature is activated, it allows the use of straight-through MDI or crossover MDI-X cables for connecting to 10Base-T or 100Base-TX devices. AutoCross determines the characteristics of the connection and automatically configures the unit to link up, regardless of the cable configuration, either MDI or MDI-X.
Replacing the fuse
Note: The fuse may be “hot swapped” (i.e., replaced while the industrial switch is in operation) provided the power source associated with the burned-out fuse has been disconnected. For example, the primary fuse may be replaced provided that power to the primary power contacts has been turned OFF.
To replace the fuse, view Figure 15, and then do the following:
1.Turn OFF and disconnect the power source associated with the blown fuse.
2.Using a flat-head screwdriver, unscrew (counter-clockwise)and remove the fuse holder. See Figure 15.
3.Carefully remove the fuse from the fuse holder.
4.Install a same size and rated (2.5 A, 250 V) replacement fuse in the fuse holder.
5.Insert the fuse holder with the fuse into the switch and rotate clockwise to secure.
6.Re-connect and turn ON the power source.
7.Verify that the industrial switch is powered UP: “Power Good” LED on the upper front panel will be ON.
| Front Panel | |
| PR I. | |
Po wer | | |
Good | | |
| Indust rial | |
FUSE | Switch | |
2.5A | PR I. SIBFT | |
250V | | |
N | | Fuse |
| PR I. |
| |
L
Fuse Holder
Figure 15: Fuse Replacement
