# Opcode: NEVAL
# Priority: Low
# Services: Teach
# Parameters: NN (2 bytes) Node number, EN# (1 bytes) Event index, EV# (1 bytes) Event variable index, EVval (1 bytes) Event variable value
# Conditions: 
# Direction: From module
# States / Modes: 
# Result: The EV value is returned in the message.