How do I address a 4219 Zone Expander to a VISTA?
Addressing the 4219 is done through dip switches. Older 4219s have five (5) dip switches while newer models have eight (8). The address and dip switch settings depend on which panel and which zone numbers are being used. We will be discussing addressing for the Vista-15P, Vista-20P, and Vista-21iP panels.
The Vista-15P and Vista-20P series control panels support hardwired expansion through the use of the 4219 8 zone, hardwired expansion module. When adding a 4219 to one of these panels the address to be used is determined by the zone numbers that are being added using that module.
For example, to add zones 9 - 16 on any of these panels, the address for the 4219 should be set to seven (7). This means dip switches 2, 3, and 4 should be OFF, and dip switch 5 should be ON. In 4219s with 8 dip switches, #6 will always be ON for these panels. Dip switch 1 has nothing to do with the address and is used to set whether the first zone on the module, zone 9 in our example, uses a high-speed response (10ms, dip switch 1 OFF) or a normal response (300ms dip switch 1 ON). The settings for these 5 dip switches are the same regardless if you have an old 4219 with five (5) dip switches or one of the newer ones with eight (8). Here's a chart that will help determine addresses and dip switch settings:
Zones | Address | Dips |
9 - 16 | 07 |
(1 ON = Normal, OFF = Fast) 2 - OFF, 3 - OFF, 4 - OFF, 5 - ON |
17 - 24 | 08 | (1 ON = Normal, OFF = Fast) 2 - ON, 3 - ON, 4 - ON, 5 - OFF |
25 - 32* | 09 | (1 ON = Normal, OFF = Fast) 2 - OFF, 3 - ON, 4 - ON, 5 - OFF |
33 - 40* | 10 | (1 ON = Normal, OFF = Fast) 2 - ON, 3 - OFF, 4 - ON, 5 - OFF |
41 - 48* | 11 | (1 ON = Normal, OFF = Fast) 2 - OFF, 3 - OFF, 4 - ON, 5 - OFF |
* These zone numbers are supported on the Vista-20P and Vista-21iP only.
As noted above, dip switch six (6), in 4219s that have it, will always be ON for the Vista-15P, Vista-20P, and Vista-21iP. Dip switches seven (7) and eight (8) are used to determine if these zones will use an End of Line Resistor (EOLR) or be Normally Closed, and whether or not the tamper is enabled or disabled.
Dips | Setting |
7 | ON = Normally Closed zones only, OFF = 2K End of Line Resistor in use |
8 | ON = Tamper Disabled, OFF = Tamper Enabled (Yes, I know that seems backward) |
The older 4219s with only five dip switches have a jumper on the board that determines whether or not the tamper is enabled. If the jumper is on the two pins closest to the center of the board, tamper is disabled, if it is on the two pins closest to the edge of the board, tamper is enabled. These devices also use a 1K resistor instead of a 2K resistor for End of Line supervision. On these models, resistors are required, not optional.
Please Note: There was a brief period of time where 4219s were released that did not support the use of Dip Switch 7 (meaning they ALWAYS used the EOLR) and dip switch 7 should have always been in the ON position. Some of these units were released with newer documentation stating that Dip Switch 7 was in use. On these units, if you turn off dipswitch seven (7) with the EOLR's in place (as the instructions indicate you should), the zones will always be faulted. So, if you seem to have everything set correctly, and the resistors are in place, but your zones continue to show faults, try turning dip switch 7 ON. When changing dip switch settings, it is recommended that you power down, make the change, then power back up.
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- Julia Ross