Starting in AX-3.6, NiagaraAX support was added for “battery-less” JACE operation, where a JACE uses capacitor-charged SRAM (static random access memory) to preserve RAM-resident data when a power outage occurs. This includes station data not yet been committed to non-volatile flash memory.
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Initially, this applied only to a QNX-based JACE controller with an installed SRAM option card. Previously, such controllers were always considered “battery-less”, where any installed backup battery was removed when the option card was installed. However, starting in an AX-3.6 maintenance release, a JACE controller can utilize both SRAM and a backup battery.
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Starting in early 2012, new QNX-based JACE models have “onboard” SRAM as standard—no option card required. This includes the newest JACE-3E series controller (introduced in 2013), plus all the NPM6E processor-based series (JACE-6E and “retrofit board” JACE-603 and JACE-645 controllers). Both the JACE-6E and JACE-3E controllers ship “battery-less”—however, you can optionally install a NiMH backup battery (identical to the one in JACE-2/6 series controllers).
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AX-3.7 and later supports all the new controller models (for JACE-3E support, build 3.7.105 or later needed), and also all controllers with an installed SRAM option card.
The Security JACE platform does not include SRAM, nor does it support the SRAM option card / DataRecoveryService in any build
of NiagaraAX.
For hardware mounting details, refer the installation document that ships with each SRAM option card or SRAM-equipped controller. This document summarizes usage scenarios and software operation details of the SRAM memory feature.
The following sections provide more details: