This video shows how to simulate IEC 60870-5-104 server using the freyrscada Simulator.
Simulate, Single Point information( M_SP), Double point Information (M_DP), Regulating step information (M_ST), Measured Scaled (M_ME_TE_1), Measured Float(M_ME_TF_1), Bit string(M_BO), Integrated Totals (M_IT),

Command simulation from HMI
Single Point Command (C_SC)
Double Point Command (C_DC)
Step Command (C_RC)
Set Point command Scaled (C_SE_TB_1)
Set Point command Float (C_SE)
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support@freyrscada.com.