diff --git a/third_party/message/rssp.go b/third_party/message/rssp.go
index 7d2479d..96dbd14 100644
--- a/third_party/message/rssp.go
+++ b/third_party/message/rssp.go
@@ -19,6 +19,10 @@ type RsspHead struct {
 	Da uint16
 }
 
+const (
+	RsspCrc16GX uint32 = 0b1_0000_1000_0001_0001 //生成多项式 G(X)=X16+X11+X4+1
+)
+
 func (h *RsspHead) Type() RsspType {
 	return h.Mc
 }
@@ -64,6 +68,15 @@ type RsspRsd struct {
 	Crc16 uint16
 }
 
+const (
+	CRC32_G_C1 = (uint64(0x01) << 32) | uint64(0x100d4e63) //crc32生成多项式
+	CRC32_G_C2 = (uint64(0x01) << 32) | uint64(0x8ce56011) //crc32生成多项式
+	SCW_C1     = uint32(0xae390b5a)                        //SCW常
+	SCW_C2     = uint32(0xc103589c)                        //SCW常
+	SJC_C1     = uint32(0x0fc22f87)                        //时间戳生成多项式
+	SJC_C2     = uint32(0xc3e887e1)                        //时间戳生成多项式
+)
+
 func (r *RsspRsd) Encode() []byte {
 	data := make([]byte, 0, 6+14+len(r.Sad)+2)
 	//报文头
@@ -252,10 +265,6 @@ func ParseRsspPack(pack []byte) (Rssper, error) {
 
 // //////////////////CRC循环冗余校验--移位寄存器///////////////////////////
 
-const (
-	RsspCrc16GX uint32 = 0b1_0000_1000_0001_0001 //生成多项式 G(X)=X16+X11+X4+1
-)
-
 type crc struct {
 	//生成多项式，即二进制位数，如生成多项式X4+X3+1对应二进制11001共5位，生成的校验码长度为4
 	g uint64
diff --git a/third_party/message/rssp_axle_section.go b/third_party/message/rssp_axle_section.go
new file mode 100644
index 0000000..6f27a93
--- /dev/null
+++ b/third_party/message/rssp_axle_section.go
@@ -0,0 +1,72 @@
+package message
+
+import "fmt"
+
+// SectionCmdMsg CI系统发送的区段操作命令
+type SectionCmdMsg struct {
+	//bit5 计轴直接复位
+	Drst bool
+	//bit2 计轴预复位
+	Pdrst bool
+}
+
+func (s *SectionCmdMsg) Encode() byte {
+	buf := 0x00
+	if s.Drst {
+		buf = buf | (0x01 << 5)
+	}
+	if s.Pdrst {
+		buf = buf | (0x01 << 2)
+	}
+	return byte(buf)
+}
+func (s *SectionCmdMsg) Decode(buf byte) {
+	s.Drst = buf&(0x01<<5) != 0
+	s.Pdrst = buf&(0x01<<2) != 0
+}
+
+// SectionStatusMsg 发送给CI系统的区段当前的状态
+type SectionStatusMsg struct {
+	//0-bit7 计轴出清
+	Clr bool
+	//0-bit6 计轴占用
+	Occ bool
+	//1-bit6 计轴复位反馈
+	Rac bool
+	//1-bit5 运营原因拒绝计轴复位
+	Rjo bool
+	//1-bit4 技术原因拒绝计轴复位
+	Rjt bool
+}
+
+func (s *SectionStatusMsg) Encode() []byte {
+	buf := []byte{0x00, 0x00}
+	if s.Clr {
+		buf[0] = buf[0] | (0x01 << 7)
+	}
+	if s.Occ {
+		buf[0] = buf[0] | (0x01 << 6)
+	}
+	//
+	if s.Rac {
+		buf[1] = buf[1] | (0x01 << 6)
+	}
+	if s.Rjo {
+		buf[1] = buf[1] | (0x01 << 5)
+	}
+	if s.Rjt {
+		buf[1] = buf[1] | (0x01 << 4)
+	}
+	return buf
+}
+func (s *SectionStatusMsg) Decode(buf []byte) error {
+	if len(buf) != 2 {
+		return fmt.Errorf("buf 长度须为2")
+	}
+	s.Clr = buf[0]&(0x01<<7) != 0
+	s.Occ = buf[0]&(0x01<<6) != 0
+	s.Rac = buf[1]&(0x01<<6) != 0
+	s.Rjo = buf[1]&(0x01<<5) != 0
+	s.Rjt = buf[1]&(0x01<<4) != 0
+	return nil
+}