diff --git a/coordinator/coordinator.lua b/coordinator/coordinator.lua
index 7df62d0..26410e6 100644
--- a/coordinator/coordinator.lua
+++ b/coordinator/coordinator.lua
@@ -444,6 +444,8 @@ function coordinator.comms(version, modem, sv_port, sv_listen, api_listen, range
                                     else
                                         log.debug("SCADA_CRDN process start (with configuration) ack echo packet length mismatch")
                                     end
+                                elseif cmd == FAC_COMMANDS.ACK_ALL_ALARMS then
+                                    iocontrol.get_db().facility.ack_alarms_ack(ack)
                                 else
                                     log.debug(util.c("received facility command ack with unknown command ", cmd))
                                 end
diff --git a/coordinator/iocontrol.lua b/coordinator/iocontrol.lua
index 51399a6..1fe04f4 100644
--- a/coordinator/iocontrol.lua
+++ b/coordinator/iocontrol.lua
@@ -31,12 +31,13 @@ function iocontrol.init(conf, comms)
         auto_saturated = false,
         auto_scram = false,
 
-        num_units = conf.num_units,             ---@type integer
+        num_units = conf.num_units,                 ---@type integer
 
-        save_cfg_ack = function (success) end,  ---@param success boolean
-        start_ack = function (success) end,     ---@param success boolean
-        stop_ack = function (success) end,      ---@param success boolean
-        scram_ack = function (success) end,     ---@param success boolean
+        save_cfg_ack = function (success) end,      ---@param success boolean
+        start_ack = function (success) end,         ---@param success boolean
+        stop_ack = function (success) end,          ---@param success boolean
+        scram_ack = function (success) end,         ---@param success boolean
+        ack_alarms_ack = function (success) end,    ---@param success boolean
 
         ps = psil.create(),
 
diff --git a/coordinator/process.lua b/coordinator/process.lua
index 11871e7..b3a6bb3 100644
--- a/coordinator/process.lua
+++ b/coordinator/process.lua
@@ -17,11 +17,11 @@ local self = {
     comms = nil,    ---@type coord_comms
     ---@class coord_auto_config
     config = {
-        mode = 0,           ---@type PROCESS
+        mode = PROCESS.INACTIVE,
         burn_target = 0.0,
         charge_target = 0.0,
         gen_target = 0.0,
-        limits = {}         ---@type table
+        limits = {}
     }
 }
 
@@ -88,6 +88,18 @@ function process.init(iocontrol, comms)
     end
 end
 
+-- facility SCRAM command
+function process.fac_scram()
+    self.comms.send_fac_command(FAC_COMMANDS.SCRAM_ALL)
+    log.debug("FAC: SCRAM ALL")
+end
+
+-- facility alarm acknowledge command
+function process.fac_ack_alarms()
+    self.comms.send_fac_command(FAC_COMMANDS.ACK_ALL_ALARMS)
+    log.debug("FAC: ACK ALL ALARMS")
+end
+
 -- start reactor
 ---@param id integer unit ID
 function process.start(id)
@@ -193,12 +205,6 @@ end
 -- AUTO PROCESS CONTROL --
 --------------------------
 
--- facility SCRAM command
-function process.fac_scram()
-    self.comms.send_fac_command(FAC_COMMANDS.SCRAM_ALL)
-    log.debug("FAC: SCRAM ALL")
-end
-
 -- stop automatic process control
 function process.stop_auto()
     self.comms.send_fac_command(FAC_COMMANDS.STOP)
diff --git a/coordinator/startup.lua b/coordinator/startup.lua
index e789f38..4d71b67 100644
--- a/coordinator/startup.lua
+++ b/coordinator/startup.lua
@@ -19,7 +19,7 @@ local iocontrol    = require("coordinator.iocontrol")
 local renderer     = require("coordinator.renderer")
 local sounder      = require("coordinator.sounder")
 
-local COORDINATOR_VERSION = "beta-v0.9.2"
+local COORDINATOR_VERSION = "beta-v0.9.3"
 
 local print = util.print
 local println = util.println
diff --git a/coordinator/ui/components/processctl.lua b/coordinator/ui/components/processctl.lua
index 9b9b2a3..5d7484e 100644
--- a/coordinator/ui/components/processctl.lua
+++ b/coordinator/ui/components/processctl.lua
@@ -47,8 +47,10 @@ local function new_view(root, x, y)
     local main = Div{parent=root,width=104,height=24,x=x,y=y}
 
     local scram = HazardButton{parent=main,x=1,y=1,text="FAC SCRAM",accent=colors.yellow,dis_colors=dis_colors,callback=process.fac_scram,fg_bg=hzd_fg_bg}
+    local ack_a = HazardButton{parent=main,x=16,y=1,text="ACK \x13",accent=colors.orange,dis_colors=dis_colors,callback=process.fac_ack_alarms,fg_bg=hzd_fg_bg}
 
     facility.scram_ack = scram.on_response
+    facility.ack_alarms_ack = ack_a.on_response
 
     local all_ok = IndicatorLight{parent=main,y=5,label="Unit Systems Online",colors=cpair(colors.green,colors.red)}
     local ind_mat = IndicatorLight{parent=main,label="Induction Matrix",colors=cpair(colors.green,colors.gray)}
@@ -208,7 +210,7 @@ local function new_view(root, x, y)
 
     local save  = HazardButton{parent=auto_controls,x=2,y=2,text="SAVE",accent=colors.purple,dis_colors=dis_colors,callback=_save_cfg,fg_bg=hzd_fg_bg}
     local start = HazardButton{parent=auto_controls,x=13,y=2,text="START",accent=colors.lightBlue,dis_colors=dis_colors,callback=_start_auto,fg_bg=hzd_fg_bg}
-    local stop  = HazardButton{parent=auto_controls,x=23,y=2,text="STOP",accent=colors.orange,dis_colors=dis_colors,callback=process.stop_auto,fg_bg=hzd_fg_bg}
+    local stop  = HazardButton{parent=auto_controls,x=23,y=2,text="STOP",accent=colors.red,dis_colors=dis_colors,callback=process.stop_auto,fg_bg=hzd_fg_bg}
 
     facility.start_ack = start.on_response
     facility.stop_ack = stop.on_response
diff --git a/reactor-plc/startup.lua b/reactor-plc/startup.lua
index b4ffb89..c8f8b23 100644
--- a/reactor-plc/startup.lua
+++ b/reactor-plc/startup.lua
@@ -14,7 +14,7 @@ local config  = require("reactor-plc.config")
 local plc     = require("reactor-plc.plc")
 local threads = require("reactor-plc.threads")
 
-local R_PLC_VERSION = "beta-v0.10.6"
+local R_PLC_VERSION = "beta-v0.10.7"
 
 local print = util.print
 local println = util.println
diff --git a/rtu/startup.lua b/rtu/startup.lua
index 392c039..557bf28 100644
--- a/rtu/startup.lua
+++ b/rtu/startup.lua
@@ -25,7 +25,7 @@ local sna_rtu      = require("rtu.dev.sna_rtu")
 local sps_rtu      = require("rtu.dev.sps_rtu")
 local turbinev_rtu = require("rtu.dev.turbinev_rtu")
 
-local RTU_VERSION = "beta-v0.10.0"
+local RTU_VERSION = "beta-v0.10.1"
 
 local rtu_t = types.rtu_t
 
diff --git a/scada-common/comms.lua b/scada-common/comms.lua
index 672d4e2..94bfd15 100644
--- a/scada-common/comms.lua
+++ b/scada-common/comms.lua
@@ -14,7 +14,7 @@ local insert = table.insert
 
 local max_distance = nil
 
-comms.version = "1.3.0"
+comms.version = "1.3.1"
 
 ---@alias PROTOCOLS integer
 local PROTOCOLS = {
@@ -103,7 +103,8 @@ local PLC_AUTO_ACK = {
 local FAC_COMMANDS = {
     SCRAM_ALL = 0,      -- SCRAM all reactors
     STOP = 1,           -- stop automatic control
-    START = 2           -- start automatic control
+    START = 2,          -- start automatic control
+    ACK_ALL_ALARMS = 3  -- acknowledge all alarms on all units
 }
 
 ---@alias UNIT_COMMANDS integer
@@ -198,21 +199,21 @@ function comms.scada_packet()
             -- outside of maximum allowable transmission distance
             -- log.debug("comms.scada_packet.receive(): discarding packet with distance " .. distance .. " outside of trusted range")
         else
-        if type(self.raw) == "table" then
-            if #self.raw >= 3 then
-                self.seq_num = self.raw[1]
-                self.protocol = self.raw[2]
+            if type(self.raw) == "table" then
+                if #self.raw >= 3 then
+                    self.seq_num = self.raw[1]
+                    self.protocol = self.raw[2]
 
-                -- element 3 must be a table
-                if type(self.raw[3]) == "table" then
-                    self.length = #self.raw[3]
-                    self.payload = self.raw[3]
+                    -- element 3 must be a table
+                    if type(self.raw[3]) == "table" then
+                        self.length = #self.raw[3]
+                        self.payload = self.raw[3]
+                    end
                 end
-            end
 
-            self.valid = type(self.seq_num) == "number" and
-                         type(self.protocol) == "number" and
-                         type(self.payload) == "table"
+                self.valid = type(self.seq_num) == "number" and
+                             type(self.protocol) == "number" and
+                             type(self.payload) == "table"
             end
         end
 
diff --git a/supervisor/session/coordinator.lua b/supervisor/session/coordinator.lua
index 03b0eb7..9075d2a 100644
--- a/supervisor/session/coordinator.lua
+++ b/supervisor/session/coordinator.lua
@@ -233,6 +233,9 @@ function coordinator.new_session(id, in_queue, out_queue, facility)
                         else
                             log.debug(log_header .. "CRDN auto start (with configuration) packet length mismatch")
                         end
+                    elseif cmd == FAC_COMMANDS.ACK_ALL_ALARMS then
+                        facility.ack_all()
+                        _send(SCADA_CRDN_TYPES.FAC_CMD, { cmd, true })
                     else
                         log.debug(log_header .. "CRDN facility command unknown")
                     end
diff --git a/supervisor/session/facility.lua b/supervisor/session/facility.lua
index 9d82477..fddb467 100644
--- a/supervisor/session/facility.lua
+++ b/supervisor/session/facility.lua
@@ -556,6 +556,14 @@ function facility.new(num_reactors, cooling_conf)
         end
     end
 
+    -- ack all alarms on all reactor units
+    function public.ack_all()
+        for i = 1, #self.units do
+            local u = self.units[i] ---@type reactor_unit
+            u.ack_all()
+        end
+    end
+
     -- stop auto control
     function public.auto_stop()
         self.mode = PROCESS.INACTIVE
diff --git a/supervisor/startup.lua b/supervisor/startup.lua
index ee39614..831727b 100644
--- a/supervisor/startup.lua
+++ b/supervisor/startup.lua
@@ -14,7 +14,7 @@ local svsessions = require("supervisor.session.svsessions")
 local config     = require("supervisor.config")
 local supervisor = require("supervisor.supervisor")
 
-local SUPERVISOR_VERSION = "beta-v0.10.1"
+local SUPERVISOR_VERSION = "beta-v0.10.2"
 
 local print = util.print
 local println = util.println