The Siemens 6AG1272-1AA10-2YA1 is a SIPLUS S7-200 TD 200C text display — the conformal-coated variant of the standard TD 200C. It talks to the S7-200 CPU over PPI on RS485, and is rated for ambient temperatures from -20 to 70 °C. Two-line backlit LCD, 20 characters per line in ASCII or Cyrillic (10 for Chinese), with 20 configurable system keys. Power comes from the S7-200 communications interface or an external 24 V DC supply; max draw is 120 mA.
Panel mounting & enclosure rating
Mounts in a 138 x 68 mm panel cutout; IP65 at the front keeps it sealed in washdown or dusty environments. Overall dimensions 148 x 76 x 28 mm, with 0.3 to 4 mm panel thickness supported.