IEC 60870-5-104

IEC 60870-5-104 is a telecontrol protocol that links field devices such as meters and plant controllers to master RTUs and SCADA systems. It belongs to the IEC 60870-5 family, alongside IEC 60870-5-101. The SATEC EM235/PM335 PRO meter supports all standard ASDU types for interrogation, event reporting and control. Its two independent Ethernet ports let two separate SCADA masters connect over IEC 60870-5-104. You set the meter's IEC 60870-5 options with the supplied PAS software, over a serial port or over TCP/IP. In 104 mode, the common address of the ASDU is fixed at 2 octets and the information object address at 3 octets. The SEL catalog lists IEC 60870-5-104 client/server support on the SEL-3555/3560, SEL-3530, SEL-3530-4 and SEL-2240. SMA data sheets list IEC 60870-5-104 as an optional telecontrol protocol, alongside IEC 61850 and DNP3. One of them is for a plant controller that can be paired with the SMA Hybrid Controller.

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• sentence 1: support check: partial - Passages show 101/104 grouped as telecontrol protocols linking to master RTU/SCADA, but don't state that it links field devices such as plant controllers, and the family relation is only implied.
• sentence 5: support check: partial - One data sheet lists 104 as optional telecontrol alongside 61850 and DNP3, and another mentions the SMA Hybrid Controller with 104, but the passages don't clearly identify a plant controller that can be paired with the Hybrid Controller.
• sentence 1: review: partial - The passages support 104 as a telecontrol protocol grouped with 101 that a meter uses to reach master RTU and SCADA systems, but they never mention plant controllers as field devices that it links. -->