Why is my AP9622 APC Building Management Card inaccessible after changing the slave ID?
... with a slave ID of 13 ( ... to output modbus data . UPS Device Management ... use of slave ID 13 (0x0d ... , thus prior device settings cannot be ... device settings include the port speed, parity, and slave ID . ... Slave ID 13 (0x0d) should not be used. ... Please note the AP9622 product can still provide Modbus data in this state as mentioned previously. The AP9622 product will still communicate via the configured port speed, parity, and slave ID , however if these settings need to be changed, the AP9622 will need to be replaced.