User Manual
58UPS Network Management Card 3 User Guide
For more information on the Modbus implementation on your UPS, see the Modbus Documentation
Addendum and Modbus Register Maps available on the APC website.
For more information on Switched Outlet Group Management with Modbus for Smart-UPS models
with prefix SMT, SMX, SURTD, SRC and SRT, see Application Note # 177 available on the APC
website.
NOTE: Temperature and humidity sensors attached to the UIO port(s) of the AP9641 NMC are not
supported via Modbus.
Modbus Serial (AP9641 only).
Path: Configuration > Network > Modbus > Serial
1. Use Access to enable or disable Modbus Serial as a method of communication with the NMC.
2. Set the connection parameters for the Modbus Serial connection:
– Baud Rate is the data rate in bits per second. It can be set to 9600 (default) or 19200.
– Parity Bit is the check bit and can be set to Even, Odd or None.
– Target Unique ID is the unique ID of the target device. It can be set to a value between 1 and
247.
3. Click Apply to save your changes.
Modbus TCP.
Path: Configuration > Network > Modbus > TCP
1. Use Access to enable or disable Modbus TCP as a method of communication with the NMC.
2. Set the Port number for the TCP connection. It can be set to 502 (default) or to a value between 5000
and 32768.
3. Click Apply to save your changes.
BACnet screen
Use the BACnet options to configure your NMC to use the BACnet protocol, and to make UPS data available to
building automation and control networks.
For more information on the UPS data points made available via BACnet, see the BACnet
Application Maps available on the APC website.
BACnet Configuration
Option Description
Access
Select the check box to enable BACnet. If this is not enabled, the NMC cannot
be accessed via BACnet. BACnet is disabled by default.
NOTE: BACnet cannot be enabled until the Device Communication Control
Password is set.
Device ID
A unique identifier for this BACnet device, used for addressing the device.
Acceptable range: 0–4194303.










