SIP-2COMMUNICATION NODE TYPE SIP-2 67/145USER GUIDE - Rev. 3 (January 2018)• Idle (bits)/DCD (msec) Period. The meaning of this field depends on the chosentransmission mode. dcd mode is the minimum idle time to resynchronize signal. It ismeasured in units of time of 10 ms, and it is limited to a maximum value of 5.idle mode is the free-line time (unused) that is necessary for resynchronize afterdetecting an error. It is measured in bit intervals, the value 0 not being allowed. Todeactivate the idle condition the value named “IDLE time” (with a value by defaultequal to 10) must be configured with a value equal to 0.The new value equal to 0 will indicate to the GW104-101 that it must not consider thestandard idle times for eliminating messages.5.9.3 RTU configurationThis submenu allows the identity parameters of the telecontrol remote (CA) to beconfigured, and the operating parameters of the IEC 60870-5-2 link.FIGURE 35 RTU submenu of GW 104-101 menuThe configuration parameters are described below:BALANCED RTUs:• #. It establishes the equipment physical port number. Port 1 for port COM1.• Common Address Size. It establishes the length of the address field that is to beused by the remote in number of octets. The possible values are 1, 2 or 3.• Common Address. It determines the telecontrol remote address.• Cause of Transmission Size. It establishes the length of the CoT field that is to beused by the remote in number of octets. The possible values are 1 or 2.• IOA Size. It establishes the length of the field containing the address of the objectsin the remote in number of octects. The possible values are 1, 2 or 3.