Mounting the Board

To mount the SNIB3 expansion board:

1. Turn all system power off: remove the connector for the standby battery, disconnect the AC power connector or the power supply fuse.

2. Install the new SNIB3 board into the upper left corner of the enclosure using the supplied screws. If there are additional expansion boards to install, install them first using the supplied standoffs. Install the SNIB3 board last so that it is at the top of the stack.

3. Connect the EBIC5 connector. Reconnect the AC power connector (or power supply fuse), then reconnect the standby battery connector. The controller board's yellow test LED should light; the other lights go through a start up sequence. When the sequence is complete, the yellow test LED goes out and the other lights stabilize.

4. If required, connect an RJ-45 network cable to the SNIB3 Ethernet connector.
   

   

Setting the Board’s DIP Switches

Before installing the SNIB3, you must first set the required DIP switches on the three switch banks:

This controls the baud rate for the RS-485 multi-drop line. 57600 and 115200 bps are only available if your RS-485 cables are made from Cat5 or Cat6 data grade wire. These speeds are NOT recommended for installations using:

• 18- to 22-gauge shielded twisted-pair cable

• NET*MUX4s

Baud rates only apply to the SNIB3’s RS-485 port. The SNIB3’s Ethernet port is used for host-to controller connections and runs at 10/100/1000 BaseT speeds. All SNIB2s and SNIB3s in a mixed RS-485 multi-drop sequence must be set to the same speed. For example, if one SNIB2 in a mixed sequence is set to 9600, all other SNIB2s and SNIB3s must be set to the same baud rate.

CCM and SNIB3 Firmware Upgrade Path

• Identiv recommends that a single CCM be upgraded at a time. Though, Velocity software supports the firmware upgrade of multiple CCM boards, but this should never exceed 5 controllers at a time, possibly less depending on the system topology.

• Never upgrade the master controller at the same time as any downstream controllers

• Additional considerations should be made for upgrades to downstream controllers, as these are communicating via RS-485 which is a slower communication protocol than TCP/IP. The default baud rate for downstream communication is 9600 baud, though this can be increased but should only be done when using data grade wiring between controllers.

• When upgrading a group of controllers which all utilize the SNIB3, the primary SNIB3 should always be upgraded first. Only one SNIB3 firmware upgrade per port is allowed. This means that only a single SNIB3 device can be upgraded at a time, regardless of being the primary or a downstream in the installation.

• If you have a combination of SNIB2 and SNIB3 you must make sure all SNIB3 controllers are connected first on the RS-485 drop. You cannot go from a SNIB3 to a SNIB2 and then to another SNIB3. Furthermore, your Port Settings within Velocity must be set to XNET2 when a SNIB2 is in the downstream line.

Firmware Download Rules

• When CCM Firmware starts to download, Velocity splits the firmware file into multiple smaller segments and send it to SNIB3, this phase will take about 5 to 6 minutes. During this phase, the controller will remain fully functional.

• After the file transfer is completed, the SNIB3 starts sending the updated packets to the CCM, at this point the controller logs off and becomes inoperative. The complete flashing and reboot process take about 8 to 10 minutes and the controller is back on-line.

Wiring the Board

To connect RS-485 serial cables between SNIB3s:

1. Turn all system power off by first removing the connector for the standby battery, then disconnect the AC power connector or the power supply fuse.

2. Punch out the knockout in the controller enclosure where you plan to route the RS-485 cable. You can either route this wire through the same opening you’re using for controller board connections, or knock out a new opening.

3. Route the wires through the opening. If it makes serial wiring easier, detach each green connector from the board as needed.

4. Loosen the screws on each RS-485 connector plug you will be using.

5. Remove insulation from the wire and insert the specified wires into the green connectors at the required slots as shown to the right.
   

   

6. Tighten the screws until the wire is securely fastened in the slot.

7. If you removed the green connector in step 3, push the green connector into the appropriate socket until it locks into place. The connector and socket are keyed, so there is only one way to plug it in.

8. Reconnect the system power by first connecting the AC power connector, then connecting the standby battery connector.

Standard Cable

SNIB3 RS-485 installations with standard 18-, 20-, and 22-gauge shielded twisted-pair cable should use 9600 or 38400 bps. Do not use higher speeds unless using Cat5 or Cat6 cable.
If you have communication problems at 38400 bps, reduce it to 9600 bps. Installations with NET*MUX4s are limited to 9600 bps.

Cat5/Cat6 Cable

For new SNIB3-to-SNIB3 RS-485 installations, we recommend making your cables with Cat5/ Cat6, or equivalent grade cable to the appropriate 5-pin green connectors. Pick one color wire, such as brown, to use for Ground. Distances up to 4,000 feet can be achieved with the RS-485 cabling type. If there is no NET*MUX4 involved, use 57600 or 115200 bps.

Installations with NETMUX4s support up to 63 controllers. Installations without NETMUX4s are limited to 16 controllers, which can have any address in the range 1-63. Where possible, limit your multi-drops to 16 units for optimum speed and performance. Even at 9600 bps, two 16-unit configurations outperform one 32-unit configuration.