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How do I change the polling mode of a device?

Set the TCH-B200 to Standard, Polling LED or Non-Polling LED through its configuration menu, with no device fitted.

Direct answer

Where the polling LED is set depends on the device. On ESP analogue sensors the TCH-B200 programmer writes the setting into the sensor and on HCP-E, HCP-W, ICP-E and ICP-W call points it is set at the control panel (ensure compatability), on older MCP and SCP call points it is DIL switch 8 on the unit. The TCH-B200 has three operation modes — Standard (leaves the setting already stored in the sensor unchanged), Polling LED and Non-Polling LED — set through a configuration menu on the programmer, with no device fitted, and held in non-volatile memory until you change it again.

Applies to

  • Products / Models: TCH-B200. The operation modes are set on the programmer and act on the current ESP analogue sensors: ALN, ATJ, ACB, ACC and ACD, and on HCP-E, HCP-W, ICP-E and ICP-W manual call points it is set at the control panel (ensure compatability), on MCP-E, MCP-W, MCP-DPS, SCP-DPS and SCP-W call points by DIL switch 8 on the unit.
  • Firmware / Version: Not applicable
  • Region: Not applicable
  • Standards: Not applicable

The three modes

  • Standard mode (Std) — reads the address, changes the address and reads the analogue value. A programmer that has been used before may still be in another mode: the selection is held in non-volatile memory. On sensors whose LED can be programmed, the LED mode is left exactly as it is stored in the sensor. On power up the display shows running dots, or the device address if a device is already fitted.
  • Polling LED (Poll) — everything Standard mode does, and a connected ESP analogue sensor is automatically configured so its LED flashes when polled. On power up the display shows Poll, then the addressing display, then the device address or running dots.
  • Non-Polling LED (N-P) — everything Standard mode does, and a connected ESP analogue sensor is automatically configured so its LED does not flash when polled. On power up the display shows N-P, then the addressing display, then the device address or running dots.

What the addressing display means

In Polling LED and Non-Polling LED the programmer shows Poll or N-P on power up, then an addressing display, then the device address or running dots. That addressing display is the address range the programmer is working in, and there is nothing to set: when a sounder, base sounder or base sounder beacon is fitted, the programmer recognises the device type on power up and lets you set an address of up to 254 without any further action. That the programmer accepts an address above 127 does not mean the address may be used. A CHQ-WS2 or CHQ-WSB2 wall sounder is used on its own and is normally addressed from 1 to 127; the Latitude configuration software allows only 1 to 127 for these devices. A YBO-BS or YBO-BSB2 base sounder is normally addressed by the control panel, which stores the address of the fitted sensor plus 127, giving 128 to 254. Sensors, and sounders addressed on their own, use 1 to 127. Always check the individual device and control panel instructions for the address range that applies. See How do I program a new address into a device? for the ranges. If the address you enter is above the range the programmer accepts for the fitted device, it shows E0 — see What do the TCH-B200 error codes mean?.

Steps

The mode is changed with the programmer empty. Setting an address into a device is a separate operation, covered in How do I program a new address into a device?.

  1. Make sure no device is fitted to the programmer and the programmer is switched off.
  2. Press and hold the right key and the centre key together.
  3. Keeping those held, press and hold the left key until dots flash on the display, then release the left key. The configuration menu appears; release the right key and the centre key.
  4. Press the left key to scroll through the options. The dots on the segments flash when the current setting is displayed.
  5. With the option you want displayed, press the right key to select it.
  6. Press the centre key to store the settings and exit. The programmer blinks the configuration once and then shuts down.

The programmer stays in the selected mode until you repeat this process and choose another one. The selection is held in non-volatile memory, so it survives a battery change.

Where else the polling LED can be set

A sensor's polling LED can be set from more than one place. On an ESP analogue sensor the programmer writes the setting into the sensor, as described above. On the same current ESP sensor range — ACC, ATJ, ACB, ALN and ACD — the polling LED can also be turned off at the control panel, and panel compatibility has to be checked. A sensor with an NP suffix is a non-pulsing type in hardware: its LEDs never flash when polled, whatever the programmer or the panel is set to, but they still illuminate in a fire condition. the polling LED is controlled by the connected control panel, and the factory default for all models is flashing mode. On older call points such as MCP-E, MCP-W, MCP-DPS, SCP-DPS and SCP-W, polling is set by DIL switch 8 on the unit: ON for polling, OFF for non-polling. Check the installation instructions for the device in front of you before assuming the programmer controls it.

How-to video

The video below shows the TCH-B200 being set to non-polling mode.

When to contact technical support

Contact Hochiki Europe technical support if the configuration menu does not appear, if a sensor's LED behaviour does not change after the programmer has been set to Polling LED or Non-Polling LED and the sensor is not an NP variant, or if you need to confirm whether a particular sensor or control panel supports the setting.

Safety note

This article is general guidance for Hochiki Europe products. Design, installation, commissioning, maintenance and modification of fire detection and alarm systems should be carried out by, or under the responsibility of, a competent person in accordance with the applicable standards (for example BS 5839-1 in the UK). Statutory requirements imposed by the relevant enforcing authority also apply. Always refer to the current product manual and data sheet for the exact model before carrying out any work.

References

Last reviewed: 2026-10-21 — Reviewed by: Hochiki Europe Technical Support