Air-conditioning for CAREL-ahu_pco -lennox unit)

[ludovic cavalier]

Here is a perl script to get CAREL pCOweb Air-conditioning Unit vars :

Tested with perl v5.8.5 built for i386-linux-thread-multi
Cacti Version 0.8.6j
Get intake_temp intake_hum blowing_temp using snmp vars on pCOweb integrated in lexnox Air-conditioning Unit

Used Mib decription : CAREL-ahu_pco_v18.MIB
usage:
./get_temp_hum_lenox.pl <host> <snmp version> < snmp community> <snmp port> <snmp timeout>

Output intake_temp intake_hum blowing_temp

Installation :
untar all
Put the perl scipt in your <path_cacti>/scripts/
Import cacti Xml template

[lcavalier]

Here is a perl script to get CAREL pCOweb Air-conditioning Unit sates :

Tested with perl v5.8.5 built for i386-linux-thread-multi
Cacti Version 0.8.6j
Get vars that returns 0:ON or 1:OFF
fan: fan is ON, actually neens that unit works
comp: compressor is ON
R1: Resistance N° 1 is ON
R2:0 Resistance N° 2 is ON
desum: desumidificator is ON
hum: humidificator is ON
major: major alarm on the unit
minor: minor alarm on the unit

Combined with previous script, you can see why temp goes up ...
usage:
./get_lenox_state.pl <host> <snmp version> < snmp community> <snmp port> <snmp timeout>

Output fan:1/0 comp:1/0 R1:1/0 R2:1/0 desum:1/0 hum:1/0 major:1/0 minor:1/0

nstallation :
untar all
Put the perl scipt in your <path_cacti>/scripts/
Import cacti Xml template

[hemul]

Hello ,
I have Carel web gate device and in "Devices" tab in Cacti it show snmp error, snmp command works, but i cacti can't receive standard parameters like SysLocation and Description, but All Carel variables work's
I changed your script with my oid's , but it still not work...
In log file i can see "SNMP: Host did not respond to SNMP" but with snmpget all works fine
How can i Disable snmp Check ... ?

[lcavalier]

Hello ,
I have Carel web gate device and in "Devices" tab in Cacti it show snmp error, snmp command works, but i cacti can't receive standard parameters like SysLocation and Description, but All Carel variables work's
I changed your script with my oid's , but it still not work...
In log file i can see "SNMP: Host did not respond to SNMP" but with snmpget all works fine
How can i Disable snmp Check ... ?

No need to disable device snmp Check. pcoWeb can normaly reply.
cacti does a snmpget to check if the host is alive getting SysLocation,Description, ...

Can you run this command on your cacti host and post the output ?

snmpwalk -c your_community -v 1 your_host

Why have you changed to "your oid's" ? Is there any oid's changes between your pcweb and mine ?

Do you get any graph in cacti ?

Anyway, Thanks for using

[hemul]

Hello lcavalier,
I have no pcoWEB device, i have Carel WEb Gate i think is something other one ...
I have no replies to sysName.0 and other Mibv2 commands, but all Carel variables from UC mib file are works ....
What can i do ?

[lcavalier]

What parameters do you have on your webgate menu :
SNMP configuration tab
(The SNMP tab is used to configure the SNMP protocol features)

[hemul]

What parameters do you have on your webgate menu :
SNMP configuration tab
(The SNMP tab is used to configure the SNMP protocol features)

In SNMP configuration tab i have :
Community, Location, Contact, SysName and IP address for traps
But i can't receive this parameters with snmpget/snmpwalk and other mibBrowsers .....
So, I have same problem with my NMS - HP Open View Network Node Manager, NNM can't see this device as SNMP ...

[lcavalier]

Found those limitations in webgate documentation. Perhaps it may help:
WARNING
The maximum length of each string SNMP is:
Max. length of the system variables in the WebGate
System Variable Max. Length
SysName 39 characters
sysContact, sysLocation 79 characters

Moreover, the string have to be composed only of alphanumeric characters (0...9, A...Z and a...z). No spaces or punctuation marks are allowed.

[hemul]

Hello lcavalier,
A problem with Carel is in next :
Cacti host.php have check for sysDescr.0 and if SysDesc.0 is null or error result is ERROR...

$snmp_system = cacti_snmp_get($host["hostname"], $host["snmp_community"], ".1.3.6.1.2.1.1.1.0", $host["snmp_
version"], $host["snmp_username"], $host["snmp_password"], $host["snmp_port"], $host["snmp_timeout"], SNMP_WEBUI);
if ($snmp_system == "") {
print "<span style='color: #ff0000; font-weight: bold;'>SNMP error</span>\n";

And my Carel Web gate can't respond to this query, but all other queries like SysName.0 and SysLocation.0 works fine ....

bash-2.05# snmpget -v 1 -c public 10.112.x.x .1.3.6.1.2.1.1.5.0
system.sysName.0 : DISPLAY STRING- (ascii): CondEMRKC
bash-2.05# snmpget -v 1 -c public 10.112.x.x .1.3.6.1.2.1.1.6.0
system.sysLocation.0 : DISPLAY STRING- (ascii): EMRKC
bash-2.05# snmpget -v 1 -c public 10.112.X.X .1.3.6.1.2.1.1.4.0
system.sysContact.0 : DISPLAY STRING- (ascii): Undefined
bash-2.05# snmpget -v 1 -c public 10.112.x.x .1.3.6.1.2.1.1.3.0
snmpget: Agent reported error with variable #1.
.iso.org.dod.internet.mgmt.mib-2.system.sysUpTime.0: SNMP: Variable does not exist or access is denied.
bash-2.05# snmpget -v 1 -c public 10.112.x.x .1.3.6.1.2.1.1.1.0
snmpget: Agent reported error with variable #1.
.iso.org.dod.internet.mgmt.mib-2.system.sysDescr.0: SNMP: Variable does not exist or access is denied.
bash-2.05# snmpget -v 1 -c public 10.112.x.x sysDescr.0
snmpget: Agent reported error with variable #1.
.iso.org.dod.internet.mgmt.mib-2.system.sysDescr.0: SNMP: Variable does not exist or access is denied.

Now, in lib/ping.php file , function ping_snmp check for device status by SysUptime.0

/* poll sysUptime for status */
$retry_count = 0;
while (1) {
if ($retry_count >= $this->retries) {
$this->snmp_status = "down";
$this->snmp_response = "Host did not respond to SNMP";
return false;
}

Now, I leave snmp_community blank and cacti will no check it for snmp status...

[lcavalier]

sorry . Can't find any solution for your problem. May be a clue for host check :
When you create a new host, you have the ability to choose how the "Downed Device Detection"

The method Cacti will use to determine if a host is available for polling.
NOTE: It is recommended that, at a minimum, SNMP always be selected.
none
ping
snmp+ping
snmp

In your case you can choose "ping"

sincerely

[hemul]

Hello,
A solution is : In CACTI , to delete community name from device and create only scripts non SNMP Pooling for this device ....
Your Script is work, but I changed it .
Thank you for quick response...

[mircea]

I try to write an Integer in pcoWEB using php and snmpset.
Reading values with snmpget is fine but I have problems to write value in pcoWEB
Here is the code.
$snmp_host = "192.168.1.120";
$snmp_community = "public";
$snmp_object = ".1.3.6.1.4.1.9839.2.1.1.1.0";
$snmp_object_integer = ".1.3.6.1.4.1.9839.2.1.3.3.0";
$output .= "<hr />Temperatures<hr />";
$temperature1 = snmpget($snmp_host, $snmp_community, $snmp_object);
$output .= "Temp 1 = ".$temperature1."<hr />";
$temperature2 = snmpget($snmp_host, $snmp_community, $snmp_object_integer);
$output .= "Temp 2 = ".$temperature2."<hr />";

$set_integer = snmpset($snmp_host, $snmp_community, $snmp_object_integer,"i","40");

Here is the error that I received from server

Warning: snmpset() [function.snmpset]: Error in packet: (noSuchName) There is no such variable name in this MIB. in C:\xampp\......

Warning: snmpset() [function.snmpset]: This name does not exist: in C:\xampp\....

Any clue how to fix this issue?

Thanks
Mircea

[varsatoru]

seems to have some errors .. can you update it lcavalier ?

[moxxbiales]

Hi there,
I ungrave this topic to get the OID of the ON / OFF value for the fan.
Does anyone have this ?
I can't find the CAREL-ahu_pco_v18 pCOWeb.mib to get it.
thanks