The date and time at which a connection from the device was established or, in the case of gateway, the date and time of the last change of status. This can be used to determine how long the gateway has been up or down relative to the current time. In the case of a device it can be used to determine how long the current connection has been up.
| Command | In | Out |
| Authorisation | ||
| Debit | ||
| Credit | ||
| AuthorisationReversal | ||
| Void | ||
| GetData | ||
| Cancel | ||
| GetHMAC | ||
| GetSystemInfo | M |