diff --git a/reactor-plc/plc.lua b/reactor-plc/plc.lua
index 304f3a6..96dc446 100644
--- a/reactor-plc/plc.lua
+++ b/reactor-plc/plc.lua
@@ -640,8 +640,6 @@ function plc.comms(id, version, modem, local_port, server_port, range, reactor,
         if not reactor.__p_is_faulted() then
             _send(RPLC_TYPE.MEK_STRUCT, mek_data)
             self.resend_build = false
-        else
-            log.error("failed to send structure: PPM fault")
         end
     end
 
@@ -761,7 +759,7 @@ function plc.comms(id, version, modem, local_port, server_port, range, reactor,
                     pkt = mgmt_pkt.get()
                 end
             else
-                log.error("illegal packet type " .. s_pkt.protocol(), true)
+                log.debug("illegal packet type " .. s_pkt.protocol(), true)
             end
         end
 
@@ -925,7 +923,7 @@ function plc.comms(id, version, modem, local_port, server_port, range, reactor,
                             log.debug("RPLC set automatic burn rate packet length mismatch or non-numeric burn rate")
                         end
                     else
-                        log.warning("received unknown RPLC packet type " .. packet.type)
+                        log.debug("received unknown RPLC packet type " .. packet.type)
                     end
                 else
                     log.debug("discarding RPLC packet before linked")
@@ -947,7 +945,7 @@ function plc.comms(id, version, modem, local_port, server_port, range, reactor,
                                 log.debug("re-sent initial status data")
                             elseif est_ack == ESTABLISH_ACK.DENY then
                                 println_ts("received unsolicited link denial, unlinking")
-                                log.info("unsolicited establish request denied")
+                                log.warning("unsolicited establish request denied")
                             elseif est_ack == ESTABLISH_ACK.COLLISION then
                                 println_ts("received unsolicited link collision, unlinking")
                                 log.warning("unsolicited establish request collision")
@@ -956,7 +954,7 @@ function plc.comms(id, version, modem, local_port, server_port, range, reactor,
                                 log.warning("unsolicited establish request version mismatch")
                             else
                                 println_ts("invalid unsolicited link response")
-                                log.error("unsolicited unknown establish request response")
+                                log.debug("unsolicited unknown establish request response")
                             end
 
                             self.linked = est_ack == ESTABLISH_ACK.ALLOW
@@ -992,7 +990,7 @@ function plc.comms(id, version, modem, local_port, server_port, range, reactor,
                         println_ts("server connection closed by remote host")
                         log.warning("server connection closed by remote host")
                     else
-                        log.warning("received unsupported SCADA_MGMT packet type " .. packet.type)
+                        log.debug("received unsupported SCADA_MGMT packet type " .. packet.type)
                     end
                 elseif packet.type == SCADA_MGMT_TYPE.ESTABLISH then
                     -- link request confirmation
diff --git a/reactor-plc/startup.lua b/reactor-plc/startup.lua
index ed56dec..1eb4120 100644
--- a/reactor-plc/startup.lua
+++ b/reactor-plc/startup.lua
@@ -18,7 +18,7 @@ local plc      = require("reactor-plc.plc")
 local renderer = require("reactor-plc.renderer")
 local threads  = require("reactor-plc.threads")
 
-local R_PLC_VERSION = "v1.1.6"
+local R_PLC_VERSION = "v1.1.7"
 
 local println = util.println
 local println_ts = util.println_ts