ethercat: add example config

etc/examples/nodes/ethercat.conf

@@ -0,0 +1,42 @@
+ethercat = {
+	coupler = {
+		position = 0
+		vendor_id = 0x00000002    # Backhoff
+		product_code = 0x044c2c52 # EK1100
+	}
+
+	alias = 0
+	master = 0
+}
+
+nodes = {
+	ethercat_node = {
+		type = "ethercat"
+
+		rate = 1000.0 # Rate of master cyclic task
+
+		# Analog Input Slave
+		in = {
+			num_channels = 8
+			range = 10.0 # -10.0 V to +10.0 V
+
+			position = 2
+			vendor_id = 0x00000002    # Beckhoff
+			product_code = 0x0bc03052 # EL3008
+
+			# PDOs are currently hardcoded!
+		}
+
+		# Analog Output Slave
+		out = {
+			num_channels = 8
+			range = 10.0 # -10.0 V to +10.0 V
+
+			position = 1
+			vendor_id = 0x00000002    # Beckhoff
+			product_code = 0x0fc63052 # EL4038
+
+			# PDOs are currently hardcoded!
+		}
+	}
+}