CI873 Connections Section 2 Functional Description
32 9ARD000014-600 A
For example, in case of LD 800DN linking device, where T -> O RPI is set to 10ms.
The time out multiplier is preset at 2 (not configurable by user). The Time Out value
is derived from the following formula:
Time Out value = T -> O RPI * Time Out Multiplier = 40ms.
So, if the CI873 EtherNet/IP I/O scanner does not receive any packets from LD
800DN for a period defined by the Time Out Value (here, 40ms) then the Implicit
messaging connection to LD 800DN times out and no I/O data from DeviceNet
slaves are updated to IEC 1131 application, but instead will have ISP values.
Connection Time-out Multiplier
The Connection Time-out Multiplier specifies the multiplier applied to the RPI to
obtain the connection time-out value. Devices shall stop transmitting on a
connection whenever the connection times out even if the pending close has been
sent. The multiplier shall be as represented in the below Table 1.
Table 1. Connection Time-out Multiplier Values
Value Multiplier
0x4
1x8
2x16
3x32
4x64
5x128
6x256
7x512
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