From 6ac8b83088cc2766069257df9a6841f436446fd9 Mon Sep 17 00:00:00 2001
From: Alex <52292902+alexrudd2@users.noreply.github.com>
Date: Thu, 2 May 2024 23:45:46 -0500
Subject: [PATCH] Fix offset for CTD which are 32 bits (#112)

---
 clickplc/driver.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/clickplc/driver.py b/clickplc/driver.py
index b543580..701f755 100644
--- a/clickplc/driver.py
+++ b/clickplc/driver.py
@@ -355,7 +355,7 @@ async def _get_ctd(self, start: int, end: int) -> dict:
         if end is not None and (end < 1 or end > 250):
             raise ValueError('CTD end must be in [1, 250]')
 
-        address = 49152 + start - 1
+        address = 49152 + 2 * (start - 1)  # 32-bit
         count = 1 if end is None else (end - start + 1)
         registers = await self.read_registers(address, count * 2)
         bigendian = Endian.BIG if self.pymodbus35plus else Endian.Big  # type:ignore[attr-defined]