def read_szl(self, ssl_id: int, index: int = 0x0000) -> S7SZL:
# Cli_ReadSZL
s7_szl = S7SZL()
size = c_int(sizeof(s7_szl))
result = self._library.Cli_ReadSZL(self._pointer, ssl_id, index,
byref(s7_szl), byref(size))
check_error(result, context="client")
return s7_szl
def test_as_read_szl(self):
# Cli_AsReadSZL
expected = b'S C-C2UR28922012\x00\x00\x00\x00\x00\x00\x00\x00'
ssl_id = 0x011c
index = 0x0005
s7_szl = S7SZL()
size = ctypes.c_int(ctypes.sizeof(s7_szl))
self.client.as_read_szl(ssl_id, index, s7_szl, size)
self.client.wait_as_completion(100)
result = bytes(s7_szl.Data)[2:26]
self.assertEqual(expected, result)