A separate Record Memory contains either response data or error data depending on the Record Mode selected for a particular Step. If the Step’s Record Mode is set to Response, a ‘1’ indicates a logic high response, and a ‘0’ indicates a logic low response. If the Step’s Record Mode is set to Error, a ‘1’ indicates a real time compare error, and a ‘0’ means no real time compare error occurred. The Record Memory can store up to 64M response vectors. The indices of the Record Memory are mapped 1 to 1 with the Vector Memory.