Issues connecting to SMT1500L over serial

[BillP]

I've recently acquired an APC UPS and I would like to access it using hyperterminal/putty, via serial cable.

I'm using the following COM4 (it is my case) configuration, as described on docs :

• Terminal Type: ANSI 
• Baud Rate: 2400 bits/second
• Bits Per Character: 8
• Stop Bits: 1
• Parity: none
• Handshaking, flow control: none

I've tried too, higher baud rates, without success.

When I issue command Y there's no response. Well, there is no response of any kind after any issued command.

However, if I install Powerchute Agent, UPS is responding correctly.

Anybody can show me where am I going wrong?

Thanks.

[Brad_C]

I think you'll find the newer units (ie newer than an SUA) don't use the old serial protocol.

[BillP]

Thanks for replying, Brad.

Does it mean that there is no way to communicate with UPD through command line? 

[Brad_C]

Pretty much, without breaking it open and getting creative.

[BillP]

Hi,

If you install the AP9620 LCC card into a SMT UPS you can connect to the SMT using the 940-0024 smart signalling cable through the LCC and utilize the old UPSlink protocol.  

Note: when the AP9620 card is installed in a SMT model Smart-UPS the UPS becomes a SUA Smart-UPS so some of the updated features of the SMT are no longer available. An example is the switched outlet groups are converted to a single outlet group to mimic a SUA Smart-UPS. 

[BillP · Accepted solution]

Thank you for response.  I cannot add any hardware to UPS so this solution is not suitable for me.

I've found that specification pdf that I downloaded from support area is not the correct one. APC provide me a second specification, based on modbus, that allowed me to communicate with UPS. So I will use this second version of specification to work.

Thank you everyone for your responses.