Sequence; Modbus Advance; Com Port History - Delta AH500 Manual

AH5 00 M od ul e M anua l

8.6.3.3 Sequence

After users right-click a blank and click Add Group, they can select groups and set the sequence of
executing the groups. After the sequence is downloaded, the packets in the groups will be
sent/received through a communication port. Besides, the users can select groups which will be
executed if errors occur by clicking the Error Execute Group column. If an error occurs when a
group is executed, a group which is specified will be executed.

8.6.4 Modbus Advance

Please refer to the introduction in section 8.5 for more information.

8.6.5 COM Port History

During communication, all packets are recorded in a buffer zone in AH10/15SCM-5A. The COM port
history helps users debug a program. Packets which are sent/received are recorded in this buffer
zone. The capacity of the buffer zone is 2048 bytes. Only the latest communication data is recorded.
The older communication data is discarded. Besides, the buffer zone is a non-latched area. Data in
the buffer zone will disappear if there is a power failure. The COM port history function can be
enabled and disabled. The data in the buffer zone can also be uploaded to SCMSoft.
After users right-click COM PORT History, they can select Start COM PORT History, Stop COM
PORT History, or Upload COM PORT History Data. If Start COM PORT History is selected, all
communication through COM1 and COM2 will be recorded. If Stop COM PORT History is selected,
8 - 3 4