Configuring a Loop
In CII terminology, a loop is expressed as a multi-detail. Multi-details are indicated through the use of specific TFDs. A multi-detail header (MDH) is used before the start of a loop, and at the end of each iteration there is a multi-detail return (MDR). The multi-detail trailer (MDT) is located at the end of the loop. The following table shows how a multi-detail is typically configured:
| TFD Type | Tag | Properties |
|---|---|---|
| Multi-detail header (MDH) | 0xFA | One-byte string |
| MDH | 0xFD | Two-byte binary numeric type N0 |
| Multi-detail return (MDR) | 0xFB | No data |
| Multi-detail trailer (MDT) | 0xFC | No data |