diff --git a/modbus_registers/_modbus_register_template.xlsx b/modbus_registers/_modbus_register_template.xlsx
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diff --git a/modbus_registers/ventilation_modbus_registers.xlsx b/modbus_registers/ventilation_modbus_registers.xlsx
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diff --git a/test.py b/test.py
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--- /dev/null
+++ b/test.py
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+from pymodbus.client import ModbusTcpClient
+import struct
+
+MODBUS_IP="10.0.0.40"
+client=ModbusTcpClient(MODBUS_IP, port=502)
+client.connect()
+
+try:
+    rr = client.read_input_registers(30, count=3, slave=1)
+    print("Raw 30..32:", rr.registers)
+
+    def as_int16(x):
+        return struct.unpack(">h", struct.pack(">H", x))[0]
+
+    for i, raw in enumerate(rr.registers, start=30):
+        print(i, "raw", raw, "int16", as_int16(raw), "scaled", as_int16(raw)/10.0)
+finally:
+    client.close()