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F-4600 With LCD Flow Meter Manual 06/18 - 2020-3 / 35874 Page 34
11 (0B Hex) Return Bus Message Count
The response data eld from the F-4600 returns the quantity of messages that it has detected on the
communications system since its last restart, restart communications option, or power-up.
This count is also available in the F-4600’s diagnostic menu page.
12 (0C Hex) Return Bus Communication Error Count
The response data eld returns the quantity of CRC errors encountered by the F-4600 since its last
restart, restart communications option, or power-up.
This count is also available in the F-4600’s diagnostic menu page.
13 (0D Hex) Return Bus Exception Error Count
The response data eld returns the quantity of MODBUS exception responses returned by the F-4600
since its last restart, restart communications option, or power-up.
This count is also available in the F-4600’s diagnostic menu page.
14 (0E Hex) Return Server Message Count
The response data eld returns the quantity of messages addressed to the F-4600, or broadcast, that the
F-4600 has processed since its last restart, restart communications option, or power-up.
This count is also available in the F-4600’s diagnostic menu page.
15 (0F Hex) Return Server No Response Count
The response data eld returns the quantity of messages addressed to the F-4600 for which it has
returned no response (neither a normal response nor an exception response), since its last restart,
restart communications option, or power-up.
This count is also available in the F-4600’s diagnostic menu page.
17 (11 Hex) Return Server Busy Count
The response data eld returns the quantity of messages addressed to the F-4600 for which it returned
a Server Device Busy exception response, since its last restart, restart communications option, or
power-up.
This count is also available in the F-4600’s diagnostic menu page.
18 (12 Hex) Return Bus Character Overrun Count
The response data eld returns the quantity of messages addressed to the F-4600 that it could not
handle due to a character overrun condition, since its last restart, restart communications option, or
power-up. A character overrun is caused by data characters arriving at the port faster than they can be
stored, or by the loss of a character due to a hardware malfunction.
This count is also available in the F-4600’s diagnostic menu page.
7.3 REPORT SLAVE ID FUNCTION CODE
The MODBUS implementation of the F-4600 supports the use of function code 17, Report Slave ID.
When a message is sent to the F-4600 requesting to report the slave ID, the following information is
returned:
F-4600-XXXXXX; where XXXXXX - serial number of the F-4600
The F-4600 will report data in decimal or HEX, depending on the control system settings. The data must be
converted from decimal/HEX to ASCII in order to form the string.
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