Rockwell Automation 1766-Lxxxx MicroLogix 1400 Programmable Controllers User Manual - Manual (Page 247)

Rockwell Automation Publication 1766-UM001H-EN-P - May 2014 207
MicroLogix 1400 Distributed Network Protocol (DNP3) Appendix F
When the selection is Disabled (Unchecked), Primary Frames from the
MicroLogix 1400 are sent out with the function code
FC_UNCONFIRMED_USER_DATA (4).
When the selection is Enabled (Checked), Primary Frames from the MicroLogix
1400 are sent out with the function code FC_CONFIRMED_USER_DATA
(3). In this case, the MicroLogix 1400 waits for the confirmation and may retry
the Frame if it did not receive the confirmation from DNP3 Master within the
time Confirmation Timeout (x1 ms).
Send LL Confirmation
Valid selections are Enabled (Checked) and Disabled (Unchecked). Default value
is Disabled (Unchecked).
When the selection is Disabled (Unchecked), the optional Secondary Frame is
not sent out with the function code FC_NACK (1) or
FC_NOT_SUPPORTED (15).
When the selection is Enabled (Checked), the optional Secondary Frame is sent
out with the function code FC_NACK (1) or FC_NOT_SUPPORTED (15).
Confirmation Timeout (x20 ms)
When Request LL Confirmation is enabled, the MicroLogix 1400 waits to
receive a confirmation frame until this timeout has expired.
The valid range is 1…65535. Default value is 1.
Message Retries
When Confirmation Timeout (x1 ms) has expired and this parameter was
non-zero value, the MicroLogix 1400 tries to send retry packets.
The valid range is 0…255. Default value is 0.
Pre Transmit Delay (x1 ms)
The MicroLogix 1400 waits for the specified time before sending the packet.
The valid range is 0…65535. Default value is 0.
RTS Off Delay (x20 ms)
When the Control is set at Half Duplex Modem(CTS/RTS handshaking), this
feature is enabled. This specifies a time delay between the end of a transmission
and dropping of the RTS signal.
The valid range is 0…65535. Default value is 0.