York YLAA0041 Installation Operation & Maintenance page 174

Section 7: Unit controls
YorkTalk 2 communications
Received data, control data
The unit receives eight data values from the E-Link
Gateway. The first four are analog values and the last
four are digital values. These eight data values are used
as control parameters when in REMOTE mode. When
the unit is in LOCAL mode, these eight values are ig-
nored. If the unit receives no valid YorkTalk 2 trans-
mission for 5 minutes it will revert back to all local
control values. These values are found under feature 54
in the E-Link Gateway.
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Transmitted data
After receiving a valid transmission from the E-Link
Gateway, the unit will transmit either operational data
or history buffer data depending on the "History Buffer
Request" on ENG PAGE 10. Data must be transmitted
for every page under feature 54. If there is no value to
be sent to a particular page, a zero will be sent.
Go to the Johnson Controls Chillers
Knowledge Exchange website for the
most up-to-date SC-EQ BAS point maps:
https://docs.johnsoncontrols.com/chill-
ers/. You can also contact your local
Johnson Controls office for a copy of the
data map.
Form 150.72-ICOM6
Issue date: 12/19/2023
Johnson Controls